ok I need ideas on how to do this

[clintyiu]

Steve,

How high is your tank? My DIY tank has 3/8" glass and is 40" long with 17" of water in it. The top centre bows 1/16". So if your tank isn't too much higher then don't worry about the glass.

I have another diy tank that is 36" long with 1/4" glass and 18" of water and the centre bows about 1/8". I saw bubbles form in the joint and reinforced the ends instead of the centre and the tank's been holding water for the last 5 years.

My 90 gal is 5' long with 1/2" glass and it bows a little more than 1/16" when filled to 1" from the top. With 3/8" glass it should bow about 2.5 times more than my tank IE a little over than 1/8". I'd like to see a picture of that 1" bow.