Thanks for the reply, I use distilled water, as far a lighting I have a 36" Orbit with 2 65 watt lights- (1)dual specturm daylight bulbs, (10,000k and 6,700k),(1)dual spectrum actinic bulbs, (460nm and 420nm), I have had the unit now almost 2 months. The actinic runs about 10 hrs and the...