I have a 220g glass tank, I'm resealing the inside. It didn't leak before but the previous owner did a terrible looking job resealing it so I'm trying to do a cleaner job. It has 4 holes drilled in the bottom that I am not going use. I decided to try and plug them with a bulkhead and cap with pvc. But a couple holes are close to the seam and when I test fit the bulkhead it only leaves about a 1/4" gap between the edge of the bulkhead and the glass. Will this be too little space for the silicone? I was planning on 1/2" overlap on each side of the seam because it's 1/2" glass.
Plugging bottom drilled glass tank, ran into problem
- Thread starter ds15
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Any reason you want to seal them off that way versus small pieces of glass? Way fewer points of failure with the glass compared to bulkhead, gasket, PVC pipe, etc.
Like you said it didn't leak, it's mostly just for appearance, so 1/4" sounds fine if you've got everything spotless clean.
Like you said it didn't leak, it's mostly just for appearance, so 1/4" sounds fine if you've got everything spotless clean.
Really just in case I switch it up in the future, the glass would not be removable. But I'm kind of doubting I will ever want to use a sump. And yeah I would feel better about glass patch too
Glass would be removable, it would just take more work than loosing a fitting.
You could also just drill the glass you repair with and open the whole back up, depending on the length of the bulk head used at that point.
Extremely easy to remove a glass patch. The cover glass thickness doesn't need to be as thick as the tank glass. Don't press the patch tight against the tank so it's easy to slide a scraper or thin knife blade between when you want to remove. You could also imbed a short length of sturdy cord or fishing line to pull on as a cutter but not necessary.
I'm with the others. Glass patch it. You can remove it with a putty knife in the future. I promise. (Or, a Dremel multimax...my favorite caulk removal tool) Also, much more reliable than sealing it off with a plugged bulkhead.