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I am thinking of building a large plywood tank with a acrylic or glass window in the front. Not quite sure on the dimensions yet but its gonna be big. (100g+) I found some water proofing paints and i was wondering which is the best. Depending on the price of the glass/acrylic it will be 8 ft X 2ft X2ft which makes it 240 gallons

Epoxy Paint
http://www.canadiantire.ca/AST/browse/3 ... ?locale=en

Silicone tent stuff?
http://www.canadiantire.ca/AST/browse/5 ... ?locale=en

DryLok Masonry waterproof paint. (do you think this will stick to plywood as well)
http://www.canadiantire.ca/AST/browse/3 ... ?locale=en

Thanks

The paint you choose needs to stick to the fiberglass reinforced epoxy resin. Plywood tanks are more than just painting plywood with waterproof paint. Reefcentral has a bunch of build threads on plywood tanks.

EDIT On second thought - why not just used colored epoxy resin?


Here's a good build.. http://www.brentsmith-photography.com/8 ... lass-build