4300 Gallon Plywood Build (3600+ Take 2)

Personally, I think Thompsons water seal would be a better option, and one of the things my company does is mold remediation.

Most importantly, make sure the wood underneath the tank can breath, and this will go along way to preventing undue moisture buildup.

And kilz is only marginally better than normal latex paint at mold prevention.
 
The only way there's going to be moisture under the tank is if I have a leak and I'll have bigger problems if that's the case.

I agree with that. Somehow I always manage to spill some water when doing water changes, servicing filters, cleaning the tank etc. Just food for thought.........
 
I agree with that. Somehow I always manage to spill some water when doing water changes, servicing filters, cleaning the tank etc. Just food for thought.........

Even during water changes and cleaning it be near impossible for moisture to get underneath this tank...unless there is a leak, which like NOLA said, is a much bigger problem.
 
gonna hate me for this if you didnt but did you use preasure treated wood on the concreat if not in 5 or 10 years or less your gonna have problems with rot esspecialy being where you are im sure you guys get a lot of rain and pt wood is also prevents termites
 
The insulation would have to be thin and the temperature difference between the room and floor at least 20 degrees before water vapor would form and start mold an mildew. If this was being built in the Midwest on concrete floors of an older home, then I would be concerned.
 
gonna hate me for this if you didnt but did you use preasure treated wood on the concreat if not in 5 or 10 years or less your gonna have problems with rot esspecialy being where you are im sure you guys get a lot of rain and pt wood is also prevents termites

It is completely against code to use pressure treated wood indoors. It doesn't rain inside my house, so rain has not a thing to do with anything. I have a termite contract on my house, so no worries there. I'd be more concerned about my house being just above grade than the tank that is 8"+ above grade.

Termites need soil and a water source to build the tunnels they use to get into the house. I'd have termites in the exterior walls of my house before they ever thought about getting to the tank. People need to study up a bit about termites before suggesting that they could get in my house and to the tank; especially undetected.

And that's also very funny about not having pressure treated wood against concrete. Nearly every house built in the US that doesn't use metal and/or concrete walls (rare) is build with NON pressure-treated lumber with the lumber frame directly against the concrete slab! My house was built in the 1960s and I have no rot in the framing on the exterior wall. How do I know you might ask? Ever hear of Katrina? My kitchen and fish room/laundry room were gutted to the bare walls. No rot in the original framing at all.
 
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