Auto top off

[cj22009]

Anybody built and auto top off system thinking of bulding one any tips would be great. Like what did you use as your resevior what type of float switch/relay thanks in advance

 

[rdnelson]

Here is mine. Been running since Jan with absolutely not problems.

Edit: Guess it helps if I include the link. LOL

 

[nathannano]

The one I have built is a 3gallon jug drilled with a air line tubing connector silicone in place. Connected to a float valve in my sump. Works perfect for me
It sits behind my tank gravity does all the work
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