I had the Repti Rapids skull waterfall, cleaned it on a Sunday, and also set up my mist king ultimate system the same day. by Tuesday the water in the waterfall had become foamy and smelled a little bit like algae. I decided to get rid of it all together after asking the people on here as well. From my understanding as limited as it is, if you have an automatic misting system, there is no hope for a waterfall, my chameleon's enclosure is kept at 70% humidity during the day and with that and the temperature of the enclosure itself, its a breeding ground for bacteria and an exercise of futility to keep a waterfall clean enough to drink from. If you haven't already, invest in an automatic misting system and live plants so your chameleon can drink the dew from the leaves. Good Luck my friend!