what brand of acrylic glue/sealant is aquarium safe?

[pontius]

I need to know what type glue to use to put the bubble baffles in my diy sump. can this be bought at Lowe's or Home Depot? thanks.

 

[dogstar]

Most common brand for connecting acrylic is Weld On product you find a local plastic dealer. I think GE makes a type of silicon that they say is for acrylic and I saw it at HD by there acrylic sheets but I dont think its safe, not sure. For a sump you can try aquarium safe silicon, no anti-mildew chimicals in it, but it does not hold to acrylic as well as to glass but if you cut your acrilic panels tight enough, so they wedge in tight, you may not need to seal them as much and as long as the flow does not push them out of place.

 

[marvida]

I like to use silicone for sump baffles because you can move them later. Just don't use it on exterior joints.