Hey guys planning out my 240 gallon plywood tank and was wondering about what to use to rubberize it, i was gonna use pond Armour but that would be way to expensive and liquid rubber from what ive read doesn't still well to silicone, ive read about redgard and thought about applying this letting it dry they spraying the inside with kylon fusion cause redgaurd dries pink would that work? or are there any other cheaper alternatives? BTW redgard is about $50 for a gallon