The Planted Tank Forum - View Single Post - New 180 Gallon Planted Tank
View Single Post
post #12 of (permalink) Old 03-03-2011, 02:27 PM
Planted Tank VIP
Gatekeeper's Avatar
Join Date: Feb 2007
Location: Earth
Posts: 6,625
Hi Jim,

There are a few ways to do it. Obviously redundant float valves are the one option, but this could be unsightly in a nice tank. I use these floats from It simply a relay that cuts off power to the water fill solenoid.

I also use a normally closed solenoid, meaning that it needs to be energized to open. Lost power, solenoid (valve) closes down.

In addition, I also put this entire thing on a timer and set the timer to just about the amount of time it take to fill. I had this down pretty tight. This way, if the float for some reason stuck (which it never has) the timer will cut the power to the solenoid.
Gatekeeper is offline  
For the best viewing experience please update your browser to Google Chrome