Check Valves

[jpdutton]

Originally Posted by brandy

I am not quite get what you mean ? - But I think you mean where does the hose enter to tank for return line. my tank is custom design. I sketched it myself with return right on the backwall 2/3 uptop, not up to the air and back in water like many other tank. Thanks

I had a tank with a similar design and what I did was to use Loc Line from the return bulkhead and bent the loc line in a shape that brought the spout closer to the water surface, so as soon as the water dropped slightly the spout of the loc line would get air to break the siphon.


This will be a much better option for you, if you have a pump failure 1/3 of your tank would siphon out, which would leave 2/3s baking under your lights.