Plywood tank!

[HorrorShowRot]

Well back in action! My fish room is all but nearly complete and ready for a project of all projects. I was stumbling around on the internet for a cheap way to get a very large tank. I stumbled on this

http://www.monsterfishkeepers.com/fo...00-Gallon-Tank

Now I was wondering anyone here good with construction? I really want to try my luck and see how it would work. But I have just a few concerns. Would the wood not just shift due to the warming/cooling of the house/room? Wouldn't that cause unwanted leaks and cracks in the waterproof coating? Also how much support should be given to the plywood? I was wondering if the 2X4s could actually support that much weight its approximately 560gallons. Plus you need to figure in sand in my case. Plus decorations. Would those 2X4s be able to withstand that much weight on them?

This is just for research as soon as I start getting dirty;) Ill make a journal!

[Cliff]

Personally, I would use 2X6s or 2X8s for something that size

I know someone who did a 400 gallon plywood tank and he used 2X6s if I remember correctly

[Cliff]

Almost forgot the link

http://www.saskreef.ca/forums/showthread.php?t=7783

It's a 420 gallon tank, and not a 400 as I stated above

[Trillianne]

That looks pretty nifty! I think quite a bit would ride on the sealing material used to keep the water off the wood.

[HorrorShowRot]

Thanks cliff!

And Trillianne I have a few different ideas for sealing the wood from the water. One being using the spray they use in water trucks (polyurea). Figure its safe because the water trucks are lined with it. And use aquarium silicone on the gaps in the wood and inbetween the glass.

Another would be to use pond liner and silicone the gaps.

[Aeonflame]

You could also look into marine paint. Its one of the most cost effective solutions