Wow. I just realized my nano evaporates about 10% a day. That's pretty brutal.. Nothing like a swing from 1.024 to 1.029 to **** off your critters (which in this case is a piece of algae). I'm probably going to build a simple gravity topoff tomorrow.. Thinking about using one of those Kent float switches. Anybody used them? Horror stories?

ok I was asked to post some info on my top-off so here it is.

First off i used two switchs. Just in case a snail crawls from the main tank past the overflow into the sump and on into the fiug and cralws on one of the floats lol.

here they are.

http://www.canreef.com/photopost/dat...035switchs.jpg

This is the splice where they are connected to the powerhead. the idea is very simple. the water drops. the float drops with it. as it drops it completes the connection and turns on the powerhead.

http://www.canreef.com/photopost/dat...1035splice.jpg

It then turns on the PH i have in my top off bucket. I have connected a john gues hose to the outflow of the pump. When the pump turns on it pushs the water into my kalk reactor.

http://www.canreef.com/photopost/data/500/1035pump.jpg

the hose goes into my kalk reactor.

http://www.canreef.com/photopost/data/500/1035feed.jpg

That feeds out another john guest hose into my fuge. If you dont have a kalk reactor then just feed it right into your sump.

http://www.canreef.com/photopost/data/500/1035exit.jpg