Bidirectional tidal flow

[golf nut]

Originally Posted by MitchM

Would drain back from the main tank affect it's operation at all?

I highly doubt it, your outlets would have to be near the surface anyway to prevent a siphon in case of a power out, you could even mount this thing in the top middle of the back of the tank and simply feed left and right, it would be a better solution.

If you say check valve I will come out there and smack you.