OMG - how can I forget this one. So I am finished my first cycle and added two fire clowns (mated pair) and turned on the lights. I get a huge cyto break out obviously! Since I started with tap water. Go to lfs - ask if I should start using RO water (place with a ton of GHA) Sales person says - that's just a waste of money - you are adding dead water to your system. OMG!!!!!