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, 2lb

Product ID: 89211045

Details

Brand
TL Reefs
Item Form
Granules
Item Weight
0.9 kg
Liquid Volume
50 gallons
Number of Packs
1

🧪Permanently bonds phosphate

♻️No leaching, long-lasting effect

⚖️Precise dosing: ½ cup/50 gal

R3219

Duties & taxes included

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Description

🌊 Keep your reef pristine and phosphate-free — because your marine life deserves the best!

EASY MAINTENANCE - Simply rinse before use and monitor phosphate levels regularly
PRECISION DOSING - Use just ½ cup per 50 gallons for optimal water clarity
PHOSPHATE LOCKDOWN - Permanently traps phosphate to keep your reef thriving
LONG TERM STABILITY - Granular ferric oxide won’t leach back, ensuring lasting purity
TRUSTED BY AQUARISTS - Top-rated solution with 4.2 stars from 277 reef enthusiasts

TL Reefs GFO Phosphate Remover is a 2-pound granular ferric oxide treatment designed for saltwater aquariums. It permanently bonds phosphate, preventing harmful spikes and maintaining crystal-clear water. Easy to dose and maintain, it’s a trusted choice among reef keepers for long-lasting phosphate control.

Specifications

ASIN	B0773Q8BS4
ASIN	B0773Q8BS4
Best Sellers Rank	#59,099 in Pet Supplies ( See Top 100 in Pet Supplies ) #515 in Aquarium Water Treatments
Brand Name	TL Reefs
Customer Reviews	4.2 4.2 out of 5 stars (277)
Date First Available	November 2, 2017
Item Form	Granules
Item Weight	0.9 kg
Item model number	43237-2
Liquid Volume	50 gallons
Manufacturer	Lanxess Corporation
Manufacturer	Lanxess Corporation
Manufacturer Part Number	43237-2
Model Number	43237-2
Number of Items	1
Number of Packs	1
Package Dimensions	10.63 x 8.11 x 2.24 inches; 1.98 pounds
Pet Type	Fish
Target Species	Fish
UPC	600150909965
Unit Count	2 Pounds

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