Is POLYURETHANE Glue reef safe?

[king_neptune]

I was wondering if you could use POLYURETHANE Glue to glue LR together. I see a lot of people use it on outdoor ponds and rock walls to glue them into place, I could use it to seal a crack on my calcium reactor's pump? It is a submersible reactor.
Also I wouldn't mind making a LR bridge and gluing it together.

 

[gypsana]

I would say no. They have chemicals that could leach and kill your system. For the LR I would use plastic hanger pieces or small pvc piping.

 

[rigdon87]

you can use holdfast to hold your lr together its a epoxy stick made by instant ocean i think

 

[koldsouth]

Just a quick question to add to this post. Is PVC glue safe for a tank? I see alot of people using PVC in there tanks. What are your thoughts on that?

 

[king_neptune]

ill jump in and say yes. i dont have the scientific deffinition, but drinking water comes from pipes that have pvc glue. i believe its called...not leaching or something.

 

[jackri]

You can use the pvc bonding stuff... but you can just put it on the ends and if you're careful not worry about lining the inside of your pvc... but fully dried and cured it's probably ok since alot of has used it but I would try my best to be careful with it.
The only super glue reef safe I know of is the cyano acrylic (I know I don't have the full spelling correct) but you want that as the main ingredient. Basically super glue and super glue gel (the name brand) works great.

 

[flower]

I made a cave and a bridge using live rock. I didn't use any glue.
I got a couple of ledges of dead rock that looked nice from the LFS. It is live rock now.
I added a picture. Please excuse the look of the tank. There is hardly anything in it. I need better lighting before buying nice coral. Oh and it is red coraline on the rock, not cyano. It looks weird in the pictures.