How many needed for 75 gal saltwater fowlr tank?

Every aquarium is different, it depends on filtration type and bio load. Bio load is the first thing to be considered. A 10 gallon tank with 10 fish needs more media than a 100 gallon tank with 1 fish. Generally speaking 1 box of this ceramic media can handle 40gal high bio load / 80gal medium bio load / 120gal low bio load. Saltwater tanks need more media as saltwater fish is more sensitive to ammonia and nitrite compare to freshwater species. Filter types need to be considered as well: Hang on back filter, canister filter or wet dry system require LESS media. Because all water entering filter is pushed through the media, makes the filtration highly efficient. If the media is placed in tank or sump, MORE media is recommended.

Cross section size (approximate)?

Each piece measures 4” x 1 1/8” x 1 1/8”

Should I arrange these vertically to allow for water flow through, for stack horizontally to provide water reisistance?

IMO, if the media is placed in low flow area, arrange it vertically will allow more water to pass through. If flow is strong enough, arrange horizontally will increase contact time. Either way works.

About 8 of the pieces floats and cant get them to sit at the bottom of my tank. Any suggestions?

I silicone mine in together in groups of 6. Just a dab works great

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Ceramic Bio Filter Media Vast Surface Area for Aquarium Sump Canister (1 Box / 24 pcs)

Product ID: 281720825

Details

Brand
Reefing Art
Item form
Granules
Item weight
794 g
Liquid volume
1.75 Litres
Unit count
24 count

🌊Vast porous surface area for max bio-efficiency

🧩24 pcs per box for modular filtration

♻️Reusable & sterilizable for sustainable use

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Description

🧪 Elevate your aquarium’s bio-filter game with science-backed ceramic power!

ECO FRIENDLY SAFE - 100% non-metallic ceramic media that won’t leach harmful metals—safe for freshwater, pond, and saltwater tanks.
LONG TERM PERFORMANCE - Easily cleaned and sterilized to maintain peak filtration without frequent replacements.
PLUG PLAY CONVENIENCE - Comes in a ready-to-use 24-piece box, perfectly sized for sump and canister filters.
VERSATILE COMPATIBILITY - Ideal for freshwater and pond tanks; just rinse and install for instant water clarity (not for reef tanks).
MAXIMIZE AQUARIUM HEALTH - Porous ceramic structure removes ammonia & nitrite efficiently, keeping your aquatic ecosystem pristine.

Reefing Art Ceramic Bio Filter Media offers 24 high-efficiency ceramic pieces with a vast porous surface area designed to remove harmful ammonia and nitrite from freshwater, pond, and saltwater aquariums. Made from 100% aquarium-safe non-metallic ceramic, this reusable and sterilizable media ensures sustainable, long-lasting filtration performance for healthier aquatic environments.

Specifications

ASIN	B07V1D6LXW
Best Sellers Rank	134,061 in Pet Supplies ( See Top 100 in Pet Supplies ) 2,153 in Aquarium Filter Accessories
Brand Name	Reefing Art
Customer Reviews	4.7 4.7 out of 5 stars (785)
Item Form	Granules
Item Weight	794 g
Liquid Volume	1.75 Litres
Manufacturer	Reefing Art
Manufacturer Part Number	1
Model Number	1
Number of Items	24
Pet Type	Fish
Target Species	Fish
Unit Count	24 count

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฿4233

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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