Will this work in freshwater aquarium

Yes, it will remove phosphate from freshwater.

How does this compare to the gfo from brs?

Similar, looks the same. My Phosphates are at 0 so it is doing its job. I change it every three weeks so not sure about longevity, I think the BRS product only needs to be changed every 2 months, so that may be something to look into.

Can this be used in a fresh water tank with a sump?

Yes, this will work in freshwater with a sump. You will want to place the GFO in a mesh bag or media reactor, to keep it contained.

How often should you change the GFO out?

Check your phosphate. When the phosphate goes up change it out. You want it to be low but not zero. You will get cyno blooms then.

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TL Reefs GFO Phosphate Remover, Granular Ferric Oxide, for Saltwater Aquariums (2lbs)

Product ID: 369566421

Details

Brand
TL Reefs
Item form
Granules
Item weight
0.9 Kilograms
Liquid volume
50 Gallons
Unit count
946.35

🔄Prevents leaching, stable water chemistry

🧪Permanently bonds phosphate

⚖️Precise dosing: ½ cup/50 gal

631.68 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Keep your reef flawless with phosphate-free perfection!

FLOW OPTIMIZED - Fluidized reactor or high-flow sump placement prevents clumping
EASY MONITORING - Replace when phosphate levels rise to maintain peak performance
PRECISION DOSING - Use ½ cup per 50 gallons for optimal clarity and control
PHOSPHATE LOCKDOWN - Permanently traps phosphates to keep your reef thriving
LONG LASTING STABILITY - Won't leach phosphates back, ensuring consistent water quality

TL Reefs GFO Phosphate Remover uses granular ferric oxide to permanently bind phosphates in saltwater aquariums, preventing leaching and maintaining crystal-clear water. Ideal for use in fluidized reactors or high-flow sump areas, it ensures stable, low phosphate levels with easy dosing and monitoring for up to 50 gallons per ½ cup.

Specifications

ASIN	B0773Q8BS4
Brand Name	TL Reefs
Customer Reviews	4.2 4.2 out of 5 stars (258)
Item Form	Granules
Item Weight	0.9 Kilograms
Liquid Volume	50 Gallons
Manufacturer	TL Reefs
Manufacturer Part Number	43237-2
Model Number	43237-2
Pet Type	Fish
Target Species	Fish
UPC	600150909965
Unit Count	946.35 Milliliters

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