Introducing… MarinePure VAULT

Secure container to keep your MarinePure Biofilter Media safe and helps keep sump organized and easier to keep clean.  Easy to assemble and it can also be used as a protein skimmer riser.  Stackable, you can stack them together for larger needs and secure storage.

Holds 1 Block, 1 gallon of Marinepure Spheres, 10 to 12 MarinePure PODs, or over 900 MarinePure GEMS.

Approximate Dimensions:

Internal, 8x8x4”

External, 9x9x5¼”

Available October 2022

MarinePure PODS

The MarinePure PODs are about 3.1 inches in diameter, created with grooves to produce a randomized water current in and around the part, ensuring greater water and media contact.  Just one Pod has the equivalent surface area of over 5,000 plastic bio-balls!

Our MarinePure POD has a unique, appealing design that helps increase its durability, with a deep cross section to help you achieve more nitrate control, making it the perfect media filter for aquariums, ponds, and aquaculture.

MarinePure PODS will be available in packages of 3 and 24, good for 100 gallons and 750 gallons of ammonia elimination respectively.

1-1/2″ Spheres

Designed for Ammonia & Nitrite Removal under high flow. Deep pore structure will allow development of low oxygen zones, which will help with control of nitrates. One MarinePure Sphere has the same surface area as 1,350 plastic 1.5″ bio-balls.

Can be used in canister filters, sumps & wet/dry filters.

Available in the following sizes

  • 2 Quarts
  • 1 Gallon
  • 5 Gallon
  • 15 Gallon
  • 100 Liters


Designed for Ammonia & Nitrite in systems of up to 75 gallons.

Box Size – 90 grams

Can be used in canister filters, hang-on back filters or in nano-tank filter systems

8x8x4″ Block

Ammonia, Nitrite & Nitrate Removal

Primarily designed to provide deep anaerobic zones for de-nitrification in passive or low flow systems.

Live rock substitute

Use in Aquarium sumps

8x8x1″ Plates

Ammonia, Nitrite & Nitrate Removal

Versatile design for DIY systems

Easy to cut


Designed for Ammonia and Nitrite Removal. Deep pore structure will allow development of low oxygen zones, which will help with control of nitrates.

Loosely packed, the 2 inch cubes are specifically designed for the high flow of koi and goldfish ponds and recirculating aquaculture systems.

One cubic foot is good for 1,500 to 2,000 gallons of pond water

Available in the following sizes:

  • ½ cubic ft.
  • 1 cubic ft.
  • 2 cubic ft.
  • 7 cubic ft.


Designed for ammonia and nitrite removal.

1 gallon of randomly shaped MarinePure Bio-Media in a mesh bag for Goldfish and Koi ponds.

Replace existing media in Waterfall filters and Canister filters with MP2C-c for significantly improved filter performance.

Excellent for up to 1,500 gallons.


Below are instructions for use and the varying needs

MarinePure™ Instructions

MarinePure is designed to be a substrate for bio-filtration, specifically to target ammonia and nitrite removal and to minimize nitrates. MarinePure is suitable for both freshwater and saltwater environments. MarinePure can be used fully submerged or in trickle/shower filters.

For Removal of Ammonia and Nitrates (Nitrification)

  • Initial rinse of media with water to remove surface particulate created during shipping.
    If tap water is used, perform second rinse with tank water to remove chlorine.
  • Locate media in filter, sump, under gravel bed, anywhere in the tank or as part of a reef structure. Locating within the flow of the water will give the most efficient results.
  • NOTE: the product is easily shaped using a hand saw or coarse sand paper. Make sure to rinse particulate before placing in tank.
    Wear a a dust mask to avoid breathing in particulate
  • Mechanical filtration of water, such as with matting, is recommended prior to water entering MarinePure product

For Removal of Nitrates (Denitrification)

  • Initial rinse of media with water to remove surface particulate created during shipping.
    If tap water is used, perform second rinse with tank water to remove chlorine.
  • Locate media in a passive location such as in a sump, under gravel bed, or as part of a reef structure.
  • NOTE: If desired, the product can be easily shaped using a hand saw or coarse sand paper. Make sure to rinse off particulate before placing in tank.
  • Wear a a dust mask to avoid breathing in particulate

Maintenance for Flow-through Filter Systems

  • Periodic backwashing or rinsing using tank water suggested every 3 months or as frequently as necessary.

Maintenance for Passive Filter Systems

If necessary, backwash and / or rinse as described above.

  • Although product should be self-cleaning, applications and use vary.
  • A weak acid can be used for cleaning, but time in acid conditions should be minimized. Make sure to wear appropriate Personal Protective Equipment when using acid.


See what our customers have to say…

Marine Depot Reviewers


Reviewed on
July 04, 2019

Yes, I would recommend this.

A Must!

Pros: Perfect for holding beneficial bacteria

Cons: None

Perfect for holding beneficial bacteria. Won’t start a tank without it


Reviewed on
November 09, 2019

Yes, I would recommend this.

Very porous

Pros: An impressive amount of surface area

Cons: None

They feel like rock, but are super light. They soak up water like a sponge and you can even pour water right through them. I used 3 plates to build a skimmer platform.


Reviewed on
April 15, 2019

Yes, I would recommend this.

Helped my bio culture!

My nitrifying Bactria culture thrives with these! My tank is looking great!


Reviewed on
March 25, 2019

Yes, I would recommend this.

MarinePure High Performance Biofilter Media 1.5 inch Spheres – 1 gallon

Pros: 1 gallon size

Cons: none

I love all of the MarinePure products.

BRS Reviewers


It works!

Performance: 100%

I started a reef tank using some great centerpiece-type texas holey rock. Since it isnt as porous as some of the other, more customary reef rock I had to supplement with marine pure. So far, so good, as my reef is 5 weeks in and properly cycled. Each time I test there are no nitrites or ammonia, despite heavy feeding schedule.

Posted on 10/13/19


Best media money can buy

Performance: 100%

This is the best media ever and doing some research 1 ball has as much surface area than 2gal of bio balls will never buy any other media again

Posted on 10/13/17


Stuff is Unbelievable

Performance: 100%

Going on week # 3 with just 1 8x8x1” plate and so far so good. It’s lowered my Nitrates already to Almost zero! I sawed very easy the Marine pure to custom fit under my sponge in the bubble trap area in the sump. I just order another box of the 1/2′ spheres so they can be placed in my refugium area along the side of my Miracle Mud tray and my mangroves. 5 stars across the board

Posted on 5/17/17

Jeff C

Super BioFilter

Performance: 100%

If you’re not using MarinePure to supplement your biofiltration, why are you still waiting? This little 8x8x1 block will substantiate 30gallons by itself, that means you don’t need as much in the display, giving you the best opportunity to play with your aquascape and get creative! I have a 46g Bowfront and 1 block of this and had a blast getting my scape perfect for our home!

Posted on 2/16/17

Big Joe

It works..

Performance: 100%

I have had the 1″ plate in my sump, located in the baffles where it can get the most water flow and my nitrates are practically zero.. I thought it was the test kit, so I used another test kit and still almost no color in the test vial…I wont say it zero, because the first two color options look the same to me (being color blind sucks..lol!)…

Posted on 12/1/16


Great product

Performance: 100%

I keep putting more and more of this stuff in my sump as time goes on. About a month later I see a decrease in nitrates as a result. Even with a big eel, I’ve almost completely eliminated carbon dosing while maintaining nitrates around 5. I believe in this stuff whole heartedly.

Posted on 10/11/16


Exceeds all other bio-media on the market!

Performance: 100%

I’ve been using marinepure for over two years now. The balls stay clean and are extremely porous! My water parameters always stay in check. I’m setting up another aquarium and will be using my existing marinepure. I will be ordering more to replace the existing balls! I 100% recommend this product! Its far superior to the Natural Porous Rock that I used to use. Great product! Its all I will ever use for bio-media!

Posted on 2/23/16


Amazing surface area very porous

Performance: 100%

These are perfect for the minimalist aquascaper. I am not a huge fan of huge piles of rock in my tank but really like having the beneficial bacteria from live rock…Marinepure is a great substitute for live rock and you don’t need 100’s of pounds of rock to do what these can do with one or two plates.

Posted on 2/18/16


Good little filter

Performance: 100%

Been in my 240 gal tank nitrates have been an ongoing problem been around 30 forever. Tank is full of big eaters 6″ french angel, 5″ picasso trigger, 3 yellow tangs, 8″ miniatus grouper, 20″ stout moray eel big messy eaters. 200lbs live rock. Block has been in sump for 3 weeks now nitrates yesterday down to 10. This thing is great.


Very porous and lots of are in a small package

Performance: 100%

Replaced regular plastic bio balls in my sump tank and what a difference these things made! Zero detectable nitrates! Lots of little critters hanging out between them! With limited space for live rock, these are the next best thing!

Posted on 3/4/14

Amazon Reviewers


5.0 out of 5 stars Works great as copepods home in a Nano aio

Reviewed in the United States on April 24, 2021

Verified Purchase

Works great as copepods “hotel” in a Nano. I put them in the bottom of media basket with an old light on the outside of filter compartment in my AIO nano. When the lights are off they move to DT and feeds everyone.


5.0 out of 5 stars Perfect bio media for nanos

Reviewed in the United States on March 28, 2021

Verified Purchase

This it a perfect solution for nano tanks, I use 2 packs in my evo 13.5 and will support more than enough bio load for my nano reef. There about the width of a nickel almost like a ball but not round if that makes sense and they seem to hold up well and not fall apart like other brands. Marine pure is definitely the way to go for this type of media


5.0 out of 5 stars Awesome product

Reviewed in the United States on November 10, 2020

Size: 1.5″ Spheres, 2 quartColor: WhiteVerified Purchase

Noticeably cleaner water in even small desktop tanks


5.0 out of 5 stars Definitely an upgrade on plastic bioballs.

Reviewed in the United States on April 16, 2020

Size: 1 galVerified Purchase

Nitrate/Nitrite/Ammonia have been at an undetectable 0 since using these but I will say I used considerably more than needed for my 185g. Phosphate has not seen any decrease from these, in my experience, but I also have a lot of tangs I feed seaweed to daily. I scattered these around in empty space in my overflows and sump, they hold up well and haven’t deteriorated after more tha a year and are all just big enough that you don’t have to worry about them getting stuck in most places or pumps – they do clog if used without a filter sock in between them and the flow, however they unclog in just a second by simply holding them in a bucket of used tank water and shaking/swishing them around one-by-one (when I’m doing a water change) – it takes about 20 minutes to do this with 2 boxes and I do it about 2x a year but otherwise they are easy and maintenance free.


5.0 out of 5 stars My Secret to a successful reef tank

Reviewed in the United States on January 26, 2020

Size: 1.5″ Spheres, 2 quart Color: White Verified Purchase

Amazing at keeping nitrates down


5.0 out of 5 stars the only bio media i will ever use

Reviewed in the United States on December 19, 2019

Size: 1.5″ Spheres, 2 quart Color: White Verified Purchase

this is the best bio media I have ever used and will be the only media I use from here on out


5.0 out of 5 stars Diameter is about the size of a quarter

Reviewed in the United States on November 3, 2019

Verified Purchase

Hands down the best bio media on the market and in the World. Thank you Marine Pure.


5.0 out of 5 stars AMAZING!!

Reviewed in the United States on September 15, 2018

Size: 1.5″ Spheres, 2 quartColor: WhiteVerified Purchase

I have not had to clean my tank since I got these — I put them all over the bottom of the talk as well as in the recirculation, along with purigen. My tank was an algae fest and no more. Its been weeks of crystal clear water. I love it as media for the bottom of tank too cause you just push them around a little and any food or poop in there just moves up to the filter. And my fish like swimming down between the balls to look for food.


5.0 out of 5 stars simply amazing!

Reviewed in the United States on May 21, 2018

Size: 4″ Block Verified Purchase

This stuff is amazing! I can just about turn off my protein skimmer with this in my sump! 90 gallon tank and I just have 1 of these. The is probably one of the best advances in the reefing community in a long time!


5.0 out of 5 stars Just buy and use it!

Reviewed in the United States on May 21, 2018

Size: 1.5″ Spheres, 2 quart Color: White Verified Purchase

This is my second box for my BioCube 14 that I added a 10 gal sump to.
So I have one gallon of these in the sump, enough for 500 gallons per the manufacturer. My tank is testing at zero ammonia, nitrite and nitrate. I have only done one water change after the tank originally cycled in February. I feed one cube of frozen food daily to the three Chromis and have yet to get nitrate to register on my test kits.
I know the chaeto in the refugium is helping but I know these balls are working.


5.0 out of 5 stars Aside from it’s biological benefits it provides the perfect housing complex for pods in the 8×8 × 4 …

Reviewed in the United States on March 7, 2018

Size: 4″ Block

Aside from it’s biological benefits it provides the perfect housing complex for pods in the 8×8 × 4 block located within the refugium. A perfect structure for them to breed and reproduce in safety. Great product just for that aspect alone.


5.0 out of 5 stars Best Addition to my Reef

Reviewed in the United States on March 6, 2018

Size: 1 gal Verified Purchase

I would have to say that these work as advertised. I have read that you cannot have too much bio-filtration and I use this model in my reef tank. I have the spheres in my last compartment with the return pump and the MarinePure large cube in the first chamber. I have 0 nitrates and 0 phosphates and all I do is bi-weekly water changes. I have taken my GFO and carbon offline. I also am using the middle chamber as a refugium, but I think this is competing the nuisance algae as well. My tank is much healthier overall since about 6-8 weeks after adding all of the MarinePure into my system. I can’t necessarily explain just how, but everything about my system appears healthier from the fish to the corals. I finally have one of “those” tanks that I think is beginning to look like the ones on so many forums.


5.0 out of 5 stars Between this and the algae in my refugium my tank …

Reviewed in the United States on February 24, 2018

Size: 1.5″ Spheres, 2 quart Color: White Verified Purchase

Between this and the algae in my refugium my tank is thriving. I don’t even use a protein skimmer right now.


5.0 out of 5 stars Great for any size tank —AMAZING PRODUCT

Reviewed in the United States on February 8, 2018

Size: 1.5″ Spheres, 2 quartColor: WhiteVerified Purchase

Our little 10 gallon tank was struggling to keep up with the shubunkin goldfish we got as babies. (They can breed with koi, that should have been a clue to me that they are HUGE fish.) I read about these and bought a box. I literally just tossed them in the tank, there’s nothing hard about it. But it made an immediate difference in water quality. The water cleared, the nitrifying bacteria had a place to live, and it cut water changes by half. Living in a crowded tank is not ideal, but if you ever need to do it, this will buy you time to set up a better situation for your fish. I will never set up a tank without it!
PS- transfer some balls from old tank to new tank to speed up cycling!


5.0 out of 5 stars AMAZING!

Reviewed in the United States on December 23, 2017

Size: 1 gal Verified Purchase

This filter media is absolutely amazing! It works sooooooo much better than regular bio-balls, some people may think that it’s expensive, but this media has much more surface area than other types of media, I have one marine pure block and one box of sphere and some bio-balls in my 300 gallon tank, the tank was heavily loaded, before I add in the block and the shpere, the water was always a little cloudy, after I add those in, the water cleared overnight.


5.0 out of 5 stars Outstanding product

Reviewed in the United States on July 25, 2016

Size: 4″ Block Verified Purchase

I had problems with nitrates and hair algae for over a year. It was a battle I was loosing and water changes were not enough. bought one of these blocks for my problem tank and the algae is all but gone. Nitrates are at an all time low. Everything looks good and I am very happy with this product.


5.0 out of 5 stars You need this just get it!

Reviewed in the United States on July 18, 2015

Size: 4″ Block Verified Purchase

I have received 3 blocks on two orders now. I will never have a tank without them ever again. I have 2 blocks in my 160 Gal fish only salt water tank. I have very little rock in the tank wanted an open look to it and this was the best way to do it. Very happy with everything will buy more for the next tank.


5.0 out of 5 stars A biological filtration problem solver!

Reviewed in the United States on June 15, 2016

Size: 4″ Block Verified Purchase

I can’t say enough about these bioplates. I saw these on Bulk Reef Supply in one of their video series and decided to try them on my next tank setup. I now am convinced that every tank should have these in the sump. I work in a LFS that services reef tanks. We have seen a dramatic drop in problems since adding these to tanks. We have begun to replace all blue bioball systems with the plates…its simply no match. The bioplate clearly has a greater surface area for bacteria to colonize to and effectively reduces nitrates due to the massive increase in biological filtration. Anyone looking to run a system with a minimalist type of aquascape should drop a 8x8x4 block in their sump.

I used 1/3 of a 8x8x1 plate in my personal Nuvo 38 and the other 2/3 in a client’s 55gl. Both tanks saw a dramatic reduction in algae growth after 3 weeks (the time it probably took to colonize). I am no longer getting cyano in the nano tank which has plagued me for nearly a year and that was with weekly water changes (sometimes more). I have even added new fish to the tank finally.


5.0 out of 5 stars godlike?

Reviewed in the United States on March 29, 2016

Size: 4″ Block Verified Purchase

this block of awesomeness is amazing. you NEED to make this a must for any setup, probably the single best item ive purchased for the filtration setup.

Amazon Customer

5.0 out of 5 stars Denitrification in saltwater is actually possible

Reviewed in the United States on December 8, 2015

Size: 4″ Block

Have now been using one of the large bricks in a moderately stocked 90 gallon reef tank for about 2 years now.

First off, the porosity of these bricks in nothing short of amazing. You can literally run water straight through the brick out of a water faucet without any flowing over the side. So at the very least, any tank is going to have a substantial surface are for nitrification. With the size of these bricks, I wouldn’t be surprised if a single brick could provide nitrification for a 500 gallon tank.

Here’s what really matters, denitrification. I was initially another skeptic that there was any chance of denitrification with this, but I’m almost 100% certain that it actually does support denitrification. Although this is anecdotal, my biopellet reactor has failed 2 or 3 times in the past 2 years, and 1 time was out of operation for about 2 months. At no point was I ever able to detect any nitrates in the tank, using a good salifert NO3 test kit. Previous to using this brick, I would get consistent nitrate increases over the course of 2 – 4 weeks when turning off pellets.

I’ve been keeping aquariums for almost 30 years now and I’m probably the world’s biggest skeptic when someone suggests any new method of removing nitrates without water changes, carbon sources, or anoxic sandbeds, but this one seems to actually work. I’m going to try them in a small pond and a separate FW tank and see if I can get denitrification in fresh water. If so, this is a complete game changer for FW aquariums, as there is almost zero way to reduce NO3 in small FW tanks and ponds other than water changes.


Contact us to learn more about how MarinePure and BioVast can help your aquarium and aquaculture environments!


P.O. Box 600
66 River Rock Dr.
Buffalo, NY 14207

info@cermedia.com or

(716) 549-6600

Leyda Vazquez
Business Development Manager
(716) 549-6600 x264

Paul Pustulka
General Manager