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: 311603401

Details

Brand
Reefing Art
Item form
Granules
Item weight
1.75 Pounds
Liquid volume
1.75 Liters
Number of Packs
1

🌊1.75L liquid volume for max bio capacity

🦠Porous ceramic structure boosts bacteria growth

🧩24 pcs per box for modular filtration

NT$1910

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Description

🧪 Elevate your aquarium’s ecosystem with next-level bio filtration!

BULK VALUE PACK - 24-piece box delivers half a gallon of premium bio media—optimize your sump or canister without constant refills.
TRUSTED BY ENTHUSIASTS - Top-rated with 4.6 stars from 770+ reviews—join thousands of pros upgrading their filtration game.
VERSATILE COMPATIBILITY - Perfectly engineered for freshwater, saltwater, and pond tanks—one solution for all your aquatic habitats.
MAXIMIZE AQUARIUM HEALTH - Vast porous surface area supercharges beneficial bacteria colonization for crystal-clear water.
SAFE SUSTAINABLE FILTRATION - 100% non-metallic ceramic ensures zero heavy metal leaching—pure safety for your aquatic ecosystem.

Reefing Art Ceramic Bio Filter Media offers 24 high-porosity ceramic granules per box, providing 1.75 liters of bioactive surface area. Designed for freshwater, saltwater, and pond tanks, this 100% non-metallic media safely removes ammonia and nitrites while fostering beneficial bacteria growth, ensuring superior water quality and a thriving aquatic environment.

Specifications

ASIN	B07V1D6LXW
Best Sellers Rank	#34,834 in Pet Supplies ( See Top 100 in Pet Supplies ) #2,020 in Aquarium Accessories
Brand	Reefing Art
Brand Name	Reefing Art
Customer Reviews	4.6 out of 5 stars 770 Reviews
Item Form	Granules
Item Weight	794 g
Item form	Granules
Item weight	794 g
Liquid Volume	1.75 Liters
Liquid volume	1.75 Liters
Manufacturer	Reefing Art
Manufacturer Part Number	1
Model Number	1
Target Species	Fish
Unit Count	24 Count
Unit count	24 Count

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NT$1910

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered 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 Taiwan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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