Thanks conner, i actually ended up buying this liner. Tested my structure with it and the glass and my seams hold!!! Everything is done, tank is on a cinder block stand and now the only thing holding me back is sealing the window? I really do not want to use bolts and risk cracking my acrylic though. Does anyone recommend bolts or no bolts? and is Regular silicone going to do the job or not? I've read several threads of people using silicone, acrylic and pond liner, with no bolts, but is there something im missing. PLEASE HELP! All i need is to seal my window! Pics pending. I do not have internet at my house Thankyou!