Hey guys, planning on building a 300 glass gallon aquarium. 8ft long, 2.5ft or 30 inches wide and 2 ft tall. I am not sure how much thick glass should i use. 10mm, 12mm,15mm but 15mm seems to be costly. Please tell how much thick glass should i use. I am also going to brace it nicely. I don't want my tank to crack or leak or burst. Pls help. Thank you.