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Originally Posted by Jack
Isn't MDF horrible after it gets wet?
Aslo, is this economical for smaller tanks? Say 70-120 gal. You could sure drill the heck out of it for closed loops which is a nice benifit.
Whats the difficulty on something like this?
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The whole idea of fibreglass is to waterproof it so it does not get wet
Does not matter what you decide to use for the main structure whether it be Plywood ( if plywood gets wet it will split as well ) or MDF as long as it can handle the water pressure.
You could use this for any size tank but the bigger the better
Cheers