there are ways to prevent snails in the overflow. eggcrate comes to mind. my tank has the built in AGA overflow, so it has the slots on the bottom and the top. im going to have a lot of flow as well, so i'm not too worried about surface scum either. the concept makes sense though.
Step-by-Step: Drilling Holes in Your Glass Tank for Bulkheads
- Thread starter JustOneMoreTank
- Start date
One more vote for the glass drills from Ebay seller lau++. I got them pretty quick (for Hong Kong) and used them to quickly put two 45mm holes into my new DIY 20G sump. It was very easy, after a little practice. I recommend that the inexperienced (like me) drill a couple of test holes in an old 10G or some scrap glass. I was managed to crack out a couple of holes before I realized I was leaning on the drill. From then on (supporting the drill) it was easy.
I used plumber's putty to hold some water around the site, and clamped a piece of scrap wood to the tank to catch the cut-out. Beautiful!
I used plumber's putty to hold some water around the site, and clamped a piece of scrap wood to the tank to catch the cut-out. Beautiful!
I recently bought from Ebay seller lau++, however, I did my purchase directly with him. I wanted a combination of sizes and quantities that made it easier than dealing with ebay. By going directly through him, I saved about $12, which doesn't sound like a lot but was a big % of the total sale. He shipped them immediately and I received them quickly with no problems. I have yet to use them as the tank I want to drill is outside and the temp has dropped. If we get another few days of 50 deg weather, I'll do the drilling.
I highly recommend this seller, and likewise recommend direct sale. Contact Teddy via em: lautszyan0 AT netvigator DOT com
HTH, Bill.
I highly recommend this seller, and likewise recommend direct sale. Contact Teddy via em: lautszyan0 AT netvigator DOT com
HTH, Bill.
JustOneMoreTank
New member
The diamond coated hole saws I got all spun true and I had very little problems cutting holes in my tanks and sump. I am glad people are still finding this thread useful. 
causeofhim
New member
I just ordered from lau++. Looking forward to giving this a shot.
causeofhim
New member
I just ordered from lau++. Looking forward to giving this a shot.
You do want to make sure the holes are true and round with no imperfections. Any little chip or out of round adds lots of stress. When water is added the pressure is pulling the hole apart as the glass flexes out and round is better to distribute. Otherwise you might end up with your tank on the living room floor one morning. And of course the least number of holes per side is better. There seemed to be a few threads on tanks cracking over time and speading from the drilled holes. Just my thoughts.
If chips are had, what about using the epoxy that glass companies use to fill dings on windshields? Not sure if this would help or not, but I doubt it would hurt? As long as the spot has compressional pressure from the bulkhead, I would think this would help keep it as strong.
Just a thought...
Bob
Just a thought...
Bob
JustOneMoreTank
New member
Stasher said:
Hey no problem Stasher.
I have 4 holes that I cut into the back glass of my 120g tank. I am really not worried in the least about the tank having problems. Ohh yes by the way... the tank came with 4 holes drilled in the bottom of the tank and All-Glass isn't worried about it either.
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