My tank is a bit overstocked so I use another product, Matrix, which I put in a canister filter to help keep the nitrates down to pretty much nothing (regular water changes help a lot too of course).
I'm a Believer
by Joe American05/11/2014
As stated by others, It can take from 2 weeks to a month to see results.
All these goofballs stating it does not work are either not following the instructions or have so much biological load that a kelp farm couldn't help them. I am going to use this product religiously in my reef setup from now on.