Poly-Filter and GFO

[Ferdy]

I have a concern that may be able to be addressed. Does Poly-Filter absorb/adsorb iron? The reason I ask is being able to determine if Poly-Filter defeats the purpose of using GFO for phosphate removal. Hopefully someone can answer this for me...I read the ASTM lab testing, and from what I gathered from that is, that, indeed, Poly-Filter does absorb/adsorb iron, which is what granular ferric oxide is. Also, will it absorb/adsorb micro nutrients such as phytoplankton and zooplankton? Thanks.

 

[Dan_P]

GFO does its job inside the GFO reactor where phosphate is adsorbed to the GFO particle. Adsorption of iron from the water is not an issue.

 

[bertoni]

I agree. I answered this in the other thread in which you posted.