this is the tank i am using it was origionally built as a freshwater resevoir for my ato but i am neverous of ato's so its never been set up , just collected dust untill now.
 
 
the tank is 6.5g  and  the dimensions are 8.5 " long x 8.5" wide x 20" high
 
 
i had filled the tank before drilling to even make sure it still held water and im glad to say it does
 
 
heres a pic of the fill:
 
 
 
 
 
 
i then decided to drill the tank in the back right corner for a 3/4" bulkhead
 
 
 
 
 
 
 
 
 
 
the tank sits dry now waiting for the plumbing to be assembled to the sump, all the plumbing will be clear vinyl tubing , and a small bit of pvc.
 
 
 
 
 
 
next post:  stand choice