any chance of this working

[hangner]

So most plywood tanks i have seen on this site had a coats of fiberglass in it
i was thinking of using this instead to put in srew holes/ imperfections and corners:http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/11728/cid/3034
i would then sand it and put like 3 coats of epoxy paint on top
would this work if the tank was built more solid(more/bigger wood)
is it going to be apretty though coating or you just thing it is going to leak after a while?
need ur opinion

 

[tunerX]

Just use bondo to fill in the cracks and gaps. I don't see a need to spend 139.00 to patch imperfections when you will be covering it with an epoxy. If you really want to, you could use regular epoxy and thicken it with a high density filler. The high density filler will be cheaper and you can use the same epoxy that you will be doing the waterproof coatings.

http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/11733/cid/3035

 

[hangner]

thanks, so basically there is no need for fiberglass if you build a really sturdy frame?

 

[tunerX]

You shouldn't need fiber if the plywood is rigid. I used fiberglass because I was worried about dropping rocks and also walking around in it. My tank will have about 400-500 lbs of rock in it.

Depending on the epoxy, you can thin it with MEK or acetone so it will wick into the wood and reinforce it. With West System they recommend warming it to make it thinner and should wick into the wood just fine. This will lessen the need for fiber but I like insurance and reassurance.

A good method would be to epoxy the panels and afterwards put a 1/2-3/4" filet of silicon in the seams. This will give the seams a little more flexibility and any cracking of the epoxy at the seam will be protected by flexible layer of silicone.

 

[hangner]

the tank will be 8x4x4 so i think i might have to walk in it at some time !