Making a sump

[Bsixxx]

Need advice on fish safe silicone, or whatever bonding agent that can mend acrylic to glass, that is also safe for fish..

 

[Dr Joe]

There isn't one. but if your putting in a divider silicone (GE Silicone I or II Door & Window w/o Bio-Seal is easiest to find here, don't know about in . ) will hold it in place as long as pressure is equal on both sides.

What are you wanting to do?

Dr Joe

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[Bsixxx]

I want to make a sump, and need something to hold the acrylic peices to the glass tank.
If that helps..

 

[Dr Joe]

So they're just divider, then it will be ok. Just silicone both sides of the 'divider'.

If tank size permits, I lay it on it's side and suspend the divider with tape to hold it in place and silicone one side at a time. If you cut the dividers to fit too snug your putting constant undue pressure on the tank which is never good.

Dr Joe

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[Bsixxx]

ok well so far they are a little too big for the tank so im cutting them, so how much space should be on both sides? 1/8 or bigger?