I am making a ATO for my SW tank. What is the best kind of float switch that doesn't cost almost the same as buying an ATO system?
There are so many on Ebay, I don't know how to sort through them!
http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=float+switch+aquarium&rt=nc&LH_PrefLoc=3
There are so many on Ebay, I don't know how to sort through them!
http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=float+switch+aquarium&rt=nc&LH_PrefLoc=3