Hey guys, the acrylic of is 6mm and would like to attach it to the glass. Im from india, so only dow corning available here. After reading loads, many suggest using dc 795 or dc 999a or dc glass 100% silicone. Need to know what would work the best. Also there will be a pump inside the box, eheim 2000. So there will be sm weight atleast.
Acrylic to glass for overflow.
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The long and short of it is there's currently no reliable long term way to bond glass to acrylic. For this reason a lot of people will suggest using glass but we can't deny the ease of working with acrylic.
But if this is for an internal overflow ("wet side only") you can get away with just about any silicone and I have successfully for many years. Just remember it's not dependable and do not put any excessive amount of force on it. Don't hang stuff off it. Don't pull on it. Just let it hold your box and you're going to be just fine.
If you are planning to make the whole back side of the tank acrylic then you've got a whole other world of problems. If that's the game plan just make the rest of the tank acrylic also.
But if this is for an internal overflow ("wet side only") you can get away with just about any silicone and I have successfully for many years. Just remember it's not dependable and do not put any excessive amount of force on it. Don't hang stuff off it. Don't pull on it. Just let it hold your box and you're going to be just fine.
If you are planning to make the whole back side of the tank acrylic then you've got a whole other world of problems. If that's the game plan just make the rest of the tank acrylic also.
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nanomania
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Im making exact box, but just that it will be a bit longer, and there will be an eheim 2000 pump in it. Will it support the weight?The long and short of it is there's currently no reliable long term way to bond glass to acrylic. For this reason a lot of people will suggest using glass but we can't deny the ease of working with acrylic.
But if this is for an internal overflow ("wet side only") you can get away with just about any silicone and I have successfully for many years. Just remember it's not dependable and do not put any excessive amount of force on it. Don't hang stuff off it. Don't pull on it. Just let it hold your box and you're going to be just fine.
If you are planning to make the whole back side of the tank acrylic then you've got a whole other world of problems. If that's the game plan just make the rest of the tank acrylic also.
I would make a glass overflow box that's 12" tall, then attach an acrylic covering. that's how I do it. most/all of the water pressure will be placed on the glass, not the acrylic.
You will be fine with that configuration. The key that makes it all okay is keep the overflow box itself inside the tank. You're free to poke a hole or whatever for a bulkhead in the tank, but the overflow box itself needs to be inside the tank. There will inevitably be a lower water level inside the overflow most times and the additional pressure from the inch or so in the tank will push against it keeping things in place very nicely. I see no further issues with what you're planning.
Joey waid
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I'm usually dead set against acrylic to glass bonds, but in this case it's not going to cause much of a issue if it does fail, which it will, but it could last for years if you don't hit it or put downward or outward pressure on it.
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