Is the standard 4 min. epoxy aquarium safe?

SimonWoodstock

SimonWoodstock

Lush
Sep 14, 2003
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www.geocities.com
I want to glue a concrete block on the bottom of a piece of driftwood to keep it from floating up. I have some 4 min. epoxy left over from an aerospace project and was wanting to use it. I read on this site before that it was better for bonding things than silicon, but I want to be sure it will not be harmful before I use it and put the wood in my tank.

Thanks.
 
That cheap old epoxy just won't cut it for long in a wet environment. You really need a marine safe epoxy to have any lasting effect.
 
Thanks for the reply, TKOS. After lurking around, I decided not to use the concrete because there is a chance it might be made of limestone.

I did get a new idea though. I bought a plastic cutting board from wal-mart and cut it to an appropriate size. Then, I fastened it to the wood with a stainless steel screw.

Now...to move the gravel out of the way and then back on top of the cutting board in a full 55g tank. ...I have my work cut out for me. Soon I will take a pic and let you guys give me your opinion/advice.

Thanks again.
 
Thanks for the reply, TKOS. After lurking around, I decided not to use the concrete because there is a chance it might be made of limestone.
Click to expand...

Although concrete is made from lime based products, it is baked, and I think it should be safe ( I've never tried it myself so take my opinion carefully).

I tie my driftwood to plastic egg crate light diffuser with nylon zip ties. this keeps me from having dead spots in my rfug's but give me a lot of surface to add weight to. With my OERFUG set-ups, the entire tank has egg crate in it so tying down driftwood is a dream.
 
I don't believe concrete is safe. it can be etched by acid.
 
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