Purigen in planted aquarium
I haven't seen any information concerning adding Purigen in a seeded tank. So my question is when is it safe to change out my carbon for Purigen. -- My tank (freshwater 50 gallon) had been up and running for a year with two Emperor filters. Last week I gutted the aquarium, added 2 inches of flourite, and one inch of heavily washed play sand, and planted approx. 8 plants. I also upgraded my filtration to a Filstar Large canister. I had cut up a sponge that was in my HOB filter and placed it in my biomedia tray. I also re-dosed the aquarium with tetra safe start. My main concern would be hampering my BB by placing the Purigen in the filter. Should this concern me?