Plywood tank

[psychemjr]

I know there are a lot of links already to plywood tanks but I wanted some input on my particular idea. I already have the wood cut. It measures 96Lx36Dx24H. Gargs site says use 3/8 glass, got that already. The tank will be about 350 gals. I am planning on using Drylock to seal the tank but since drylock is designed to bond to concrete I am linning the inside of the tank with concrete backer board screwed to the plywood the painting with drylock.

Question 1 Does anyone know if drylock will bond to itself as in multiple coats?
Question 2 3/8 glass?
Question 3 Drywall srews of outdoor screws?
Question 4 Does 350 gal classify as a monster fish tank.

I start putting the wood together tomorrow. I heard my wife tell one of her friends that I was building a big fish tank and if it works she is going to drown me in it....yikes
The only change so far would be if the glaser can get me 1/2 glass 36 x 72. Then the tank gets bigger. Oh yeah the tank is for my WC Moba frontosa.
Thanks in advance
Naim

 

[psychemjr]

OK I went onto UGL website and answered one of my questions. Yes you can apply additional coats of Drylock..

 

[Bud_Man_Jr]

i think dylock seals plywood too

 

[psychemjr]

I would love to skip the added cost of the backer board but I cannot find any material on the long term bond between drylock and plywood. The added cost is about $60.00 to the project but at least I would be using drylock bonded to concrete as it was intended. I have read of another guy that is using drywock to plywood but I am not sure how long or if he has noticed any adverse effects as if yet.

 

[rottbo]

thefishguy jas an 1100 gallon that was built using the backer board and drylock and has had no problems with leaks or chemical leaching my 180 has 1/2 glass for an 8' piece i would go 3/4 but i like to over do things

 

[Demon_fish]

sry i didnt mean to post here.

 

[psychemjr]

How tall is your 180? OK so I line the tank with backer board but then when it comes to installing the glass what is better. silicone to drylock covered cement or leave the wood bare and go that way

 

[raceguy333]

thefishguy jas an 1100 gallon that was built using the backer board and drylock and has had no problems with leaks or chemical leaching my 180 has 1/2 glass for an 8' piece i would go 3/4 but i like to over do things

It's actually around 800 after it was all said and done.. Here's the build:

http://www.cichlid-forum.com/phpBB/viewtopic.php?t=103294

i think dylock seals plywood too

There is another member on that forum that is testing the drylock without the backer board... Here is a link to that thread:

http://www.cichlid-forum.com/phpBB/viewtopic.php?t=115832

 

[joeytoe]

if your planning to have your glass taller than 24" Id go with 5/8" - 3/4" to be safe

 

[psychemjr]

So OK I started building this beast and well I have my reservations. This thing is huge. I am taking pics so I will post them when the camera is finished.