I have converted the bulbs over to a 65 watt CF dual daylight (6.5k,10k). I'm dosing with Florish products right now until my Greg Watson supplies come in. I had been using Excel in the past, until about two weeks ago when the bottle ran out. My Rotla Indica has not grown at all since the excel ran out. My E. Tenellus has started to wither a bit. And there is a fine black thread like coming off the E. Tenellus in a small section. Also I've been fighting GW since the Excel ran out. Now I'm not sure if all is related to the Excel or not. But I had been using excel for about two months with out any of these problems. So I linked it to the Excel. I don't have my test kits in yet, so I can't really give the basics.