HEY!
My mum when i brought the tank; went to the LFS to buy a heater, i told her JUST buy a heater and leave.
She came and picked me up from my meeting at school for this award where i get a grant of £1.150 to do anything i like; me and my mate didn't get it... anyway
We got home and she gave me the heater and the bottle of this cycle stuff =/ i was like great... another con; a waste of a fiver =(
I put it in; nothing, i then tripled the dose; and around 2 weeks later it had done nothing. So I think this is crap; just get ammonia and do it that way.
Sorry to sound harsh