Looking for insight from someone that has a tank around 1500 gallons. I've gotten one quote to build my tank that will use 3/4" Starphire glass. A different builder has said that the 3/4" is not safe enough and that I need to use a multi layer of glass with laminate in between. This drives the cost up significantly but the reasoning is understandable. I've gotten multiple quotes pertaining to the single sheet but only one pertaining to the multi. Ultimately, is the 3/4" safe or does the multi layer need to be done?