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Old 10-31-2005, 04:54 PM   #11
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Now I get it, I wish I could get a 37 gal in my 55 Sorry I missed that. Congrats on the bigger tank!
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Old 11-01-2005, 04:34 PM   #12
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I built a sump out of a 30 gallon glass aquarium and acrylic baffles. I used clear silicon bought from home depot and have had no problems for over a year now. I am not sure why they say you can't silicon glass to acrylic? Worked fine for me.
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Old 11-01-2005, 04:44 PM   #13
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Is that right?? Maybe I'll glue up a test piece and bend it around a bit.

Running fine for a year, huh? Good thing is the bond itself will not be taking much load so..... :| :|
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Old 11-01-2005, 04:47 PM   #14
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The reason "they say" not to use silicon is that it will not bond to acrylic. As long as there is not much pressure against it, the bond on the glass will hold the acrylic in place but if you have different water levels in different compartments it will not hold. There will also be some leaking between the silicon and acrylic but that would not be a issue in a sump.
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Old 11-02-2005, 03:16 PM   #15
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I'm thinking the same thing, Brenden. Leaks won't be detected and the load on the joints is minimal although, if I'm going to take the time and money to build my own - which I always do - then I want the correct materials.
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Old 11-02-2005, 05:24 PM   #16
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Weldon 20 might.. and I mean might hold well enough in a sump for long term use..
silicone doesnt bond to acrylic as brenden said.. it might give way over time with much in the way of preasure changes.. as far as glass to glass silicone bonds to both..
I personaly dont like the idea of drillling after the fact, plan plan plan then measure three times and drill once LOL. so glass is fine..
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