Concrete

[RichBowyer]

Somewhere over the summer I read an item online about repairing things underwater at aquariums and what they use. It is a concrete product and it doesn't hurt the fishies.

Anyone have any idea what it is? I need to make something. :o)

[KcEE]

Repair things? Like? I think the others need more information...

[RichBowyer]

I want to make bases for my plastic plants so that everytime I do something in the tank I don't end up screwing things up. I'd also like to take a few pieces of rock from my yard (I have plenty) and build "stuff" with it.
Also, this is a product that is widely available in home improvement stores.

[gm72]

Most of us use aquarium-safe silicone as a glue for things such as those of which you speak.

[ganoderma]

what do large aquariums/zoos use? you always see "concrete" in there...anything special?

[Incredulous_Ed]

Mostly for aquarium purposes, poeple use silicone sealent. Make sure to buy aquarium safe silicone. This needs to dry for a week before water is added to it.

There is aproduct from drs foster and smith that you are speaking of. It like hardens underwater and is (of course) aquarium safe.
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[Becikeja]

You could always use quickcrete, just make sure to let it cure and stabalize before you put it in your tank.