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: 144786027

Details

Brand
Reefing Art
Item Form
Pieces
Item Weight
1.8 pounds
Liquid Volume
1.75 liters
Number of Packs
1

🌊Vast porous surface area for max bio-efficiency

🧩24 pcs per box for modular filtration

🛡️100% non-metallic, aquarium-safe ceramic

₨20597

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Description

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

COMPACT YET MIGHTY - Half-gallon volume packed into a lightweight 1.75 lbs box for easy handling and installation.
MODULAR POWERHOUSE - 24 precision ceramic pieces designed for scalable filtration setups.
SAFE SUSTAINABLE - 100% non-metallic ceramic ensures zero heavy metal leaching, protecting your aquatic ecosystem.
UNIVERSAL COMPATIBILITY - Perfectly engineered for freshwater, pond, and saltwater aquariums alike.
MAXIMIZED BIO PERFORMANCE - Porous internal structure offers superior ammonia and nitrite removal efficiency.

Reefing Art Ceramic Bio Filter Media delivers 24 high-efficiency ceramic pieces with a vast porous surface area, engineered to remove harmful ammonia and nitrites effectively. Safe for all aquarium types, this non-metallic, lightweight filter media ensures superior biological filtration without risking metal contamination, making it a must-have for professional and hobbyist aquarists aiming for pristine water quality.

Specifications

ASIN	B07V1D6LXW
ASIN	B07V1D6LXW
Best Sellers Rank	#28,850 in Pet Supplies ( See Top 100 in Pet Supplies ) #277 in Aquarium Filter Accessories
Brand Name	Reefing Art
Customer Reviews	4.7 4.7 out of 5 stars (817)
Date First Available	July 8, 2019
Item Form	Pieces
Item Weight	1.8 pounds
Item model number	1
Liquid Volume	1.75 liters
Manufacturer	Reefing Art
Manufacturer	Reefing Art
Manufacturer Part Number	1
Model Number	1
Number of Items	24
Number of Packs	1
Package Dimensions	7.36 x 4.76 x 4.49 inches; 1.75 pounds
Pet Type	Fish
Target Species	Fish
Unit Count	24 Count

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₨20597

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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Customer service was outstanding when I had questions about the product.

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