They grow plants about the same the only difference is the Flourite products will have trace iron in them but water column ferts will supply that so PFS works just as well - it all comes down to witch one you like looking at the best.
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If your going to add C02 your going to have to start using a real fert regiment so it won't matter what substrate you use just as long as it's between 1mm to 3mm in size.
- Brad
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