How often do you have to clean your glass ? I changed out two bulbs in my tank from 110 wat VHO's to 55 watt T-5s . So now I have 6 T-5's on my 90 . Since I did it I have to clean my glass more often .After 3 days it's starting to turn green . I think i had more of a red alge on the glass before .I don't seem to have a alge problem in the tank though . When I check my RO tds it is around 20 . All my tank parameters are fine and the cheto in the sump is growing . How often do most of you have to clean your glass ?