sealing a tank

[glenn37]

waht is a good method of sealing a sel on a acrylic tank or is a good shim going to help

 

[Copingwithpods]

Can you post some pictures of the problem?

 

[lapin]

waht is a good method of sealing a sel on a acrylic tank or is a good shim going to help

What is a good method of sealing a ??? on an acrylic tank?
Will a shim help seal a ???

I dont understand