I agree. Walmart is there to sell you what you want cheap. Does a serious reefer shop for aquarium supplies at Walmart? No. I can't find anything in the fish area at any Walmart that I need. Except silicone. Think of it this way, can you buy a bulkhead or a drill bit for glass at Walmart? Wet - Dry, Refugium, No, only hang on the tank filters. And have you EVER looked at what's happened to the glass thickness of the 10 gallon tanks they sell? I bought 6 over time from them, when I was in there, I'd pick one up. I was going to setup a breeding system with them. Until I drilled them out. The cutting process is not what broke the tank, the bulkhead and your plumbing needs to be dead on, no push or pull, or the glass will crack. Just the weight of the plumbing broke one on me.
There is one left, and I cant give it away.
That's why I used an older 15 gallon as my sump. thicker glass. And the 5.5 gallon skimmer chamber, If you look closely, you can see the 1/4" glass bandage I put on the tank before I drilled the patch and the tank. This gave me more durabuility. After I broke that 55, I pur a new panel on the back. Everyone does it once, Repair a tank... but looking back, I should have scrapped it, and bought new, It would have been cheaper, and I could have drilled the end like I wanted.
It's sad, but you get what you pay for. I thank god everytime I look at my 75 though, I got lucky when I found I could drill out the back wall. Never have to worry about spilt water again!
Jason