plywood tank, pond liner, and bulkheads

[slevesque]

I have seen people making sumps or top-only-view tanks using plywood and EPDM pond liner.

Since, if I'm correct, bulkhead gaskets are made of EPDM, could we put a bulkhead on one of these sumps? Using a little piece of acrylic between the liner and the plywood might help to have flat surface in order to have a leakproof seal. Something like this:

Would that work?

 

[javatech]

no need for the acrylic i put mine in afteri painted it and then justput some paint on the hole to seal the plywood