a couple of days ago i asked the pet store if he was able to order in a 4 ft tank for me to start a maingano setup , or perhaps one oscar. he had one sitting the the back that supposedly had a slight leak but he hadn't checked it. so he gave it to me.
got home and filled up, yes it did have a slight leak. so next day i went and got some special non toxic silicon for aquariums and cut all the old silicon away in the leaking joint ( cleaned it up real nice) and did a pretty good job.
in 4 days i can test it. and if it works i got myself a nice 4 ft tank.