I find it interesting that some are having such poor luck with PC and others have 500G tanks that are perfect. I am starting to lean towards either tecnique or process. as has been said Acetone DOES Leave a residue behind. when I spoke witht the guys at Liquid Rubber in Calgary they suggested using Butyl Rubber to seal the glass as it doesn't effect the PC. I haven't looked into it yet as to weather it is fish safe but if the glass is sealed in before the PC is applied then the PC will be over the Butyl Rubber therefore eliminating the need for it to be fish safe it would be like a added seal with a barrier between. Pete what you said about it bonding well where its thicker I find interesting. I am hoping to get ahold of the guys tomorrow and ask a few questions. maybe they can clue us into the answers
4' 90 Gallon converted to 240 4' Square Plywood and Glass Build
- Thread starter nolapete
- Start date
Thanks for the info greengiant. They make fish safe pond liners out of butyl rubber, so I would think there must be a sealant type that would work.
Quite honestly, I don't think he let the PC cure long enough and rushed getting it wet. PC DOES NOT cure overnight. Even though it appears dry to the touch, it is not cured. It is not fully cured until it is at 15% moisture content. I'm doing my own test on glass, but it will be a while before I have a result. If it ends up requiring butyl rubber sealant between the glass and PC, no big deal. You only need an inch maybe of it to bridge between the PC and glass. I'd use hard rubber as a gasket to bridge between the two.
The thin parts can be rubbed off, but they're more like film than a real coat. The parts that are thicker don't come off. Sometime this week between coating the big tank, I'll do some work on the test tank.
Any kind of update on this project? I know you've been working on your 4300 so i doubt theres been much time for this one but still interested in how it might be shaping up.
