Anyone know of any sealants strong enough to build a wooden flood table with?

I'm doing a DIY flood and drain system out of wood. The problem is I need some kind of liquid rubber waterproofing. Blue max is good but its $200 minimum which defeats the purpose of DIY. Anyone have any suggestions for a good sealant?

You will just end up fighting yourself, cough up the money and buy a botanicare, you will be very glad you did. Craigslist is a great place to find used ones.

check out redgard meets all the same ansi standards as blue max without the heavy price
Do 3 coats instead of 2 as a good waterproofer.

epdm liner.

6 mill plastic, that way no wood contamination in nutes