I have corkscrew, italian and jungle val, moderate light, tall tanks and no Co2 they are doing well with some growth and a few new plants showing up each week. I add KCL and florish a coule times a week, and get my P from the tap and my n from the fish. Growth is by no means spectacular, but it is noticable and the plants are very healthy. In one tank I add florish excell when I am home, my Jungle val is growing with some pretty good red showing in that tank. very beautifull very tall plants IMO.
dave