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I spoke with Aqueon twice earlier this year. They are not keeping tabs on what kind of glass they use in the production line. The only sure bet is to check it yourself.If this tank is from Petco®. Do Not drill it.
All Petco's 55 and 75 gallon tanks are tempered glass. All panels.
Please, I cannot stress this enough. Yes, the documentation from tank manufacturers says the bottom is the only tempered panel. BUT, real life experiences for many people have proven otherwise. You MUST do the tempered glass test using polarized lenses.Okay, so I have called Marineland about the 75 tank and stand from petsmart and it 100% is not tempered except for the bottom glass. All sides are perfectly fine to drill.
My display is a 300 gallon tank, and my number one regret is not drilling it.Okay, so I have called Marineland about the 75 tank and stand from petsmart and it 100% is not tempered except for the bottom glass. All sides are perfectly fine to drill.
A proper HOB overflow like the eshopps will never lose siphon unless something catastrophic happens. You can turn the pump off and on as manh times you want it always stays primed. Although from experience i do regret not drilling my 75 gallon as algae starts and coralline starts to collect in the u tubes and within 2 weeks the amount of water that passes to the sump slows down which throws the ATO off.HOB overflows are known to lose siphon and flood aren't they?
On this I’ve walked right in to the store with sunglasses and a laptop/tablet. Store manager came over and watched me go through them; afterwards he restocked with what he “thought” were tempered vs non... gave him my $.02 and said just don’t tell anyone they “are” or “are not” tempered!That doesn't match my experience. There are several YouTube videos that show how to use polarized sunglasses to determine for yourself whether or not the glass is tempered and whether or not it is safe to be drilled.