which glue do you use?

I use this exact stuff, you can find it at home depo or Lowes

http://www.officeworld.com/Worlds-Biggest-Selection/LOC0130379/07Q1/
 
I usually used superglue from the dollar store, but I have since been using the same Loctite that Hunchback linked to. You can also buy loctite superglue in a regular tube and reuse your old squeeze applicator. I havent found any other brands (cheaper) that fit the squeeze applicator too well.
 
thanks guys, i've been afraid to use any glue cause i might use the wrong one and kill everything in my tank.
 
I've used the Loctite Superglue gel (Home Depot or Lowes) on montipora digitata and directly on zoanthid polyps when gluing and have never had any problems polyps open up a few hours after gluing them onto the rubble etc.
 
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