i would think that work quite well. Is there any issues with your ro water coming out brownish though? How long do you rinse out the gfo for your ro system?
I haven't done any testing but I do change the HCGFO every 3rd time I change the filter media I would say roughly every 3000 glns of water.
never had any problems with phosphates and my tank water is always crystal clear as some canreefers could attest to.
12-20-2011, 02:46 AM
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