I have chlorine tablet floaters in my above ground pool. Tablets are way to slow to dissolve (they stay there for weeks, because there's little water movement. Has anyone seen or heard about Arduino based project that will add extra water flow thru floaters? Didn't want to start from scratch if someone already done something similar 
I plan to have it on water tight enclosure power by a LiPo battery and solar charged. Haven't figured out how to move water yet. It can be a propeller (magnetically coupled to an enclosed motor. I have a toy submarine that works on this principle, should be easy to duplicate). Or perhaps a small water pump, which probably is easier to implement, but I have 0 experience with these... High corrosion of course is an issue where chlorine is involved...