Glueing rocks

[bettez8789]

So I have a tank that’s been up and running over a year now and I want to secure my rocks. ( yeah I know I should of done it from the beginning) will it be ok to jb weld water them and then place back in after doing a water change.

 

[Joker]

No that will most likely kill your livestock. You can use aquarium reef putty. I would recommend opening your Skimmer up fully as the putty does make skimmers go crazy.

 

[Skmaiden]

JB Water Weld has been used in reef tanks for many years though even with that said, I would still limit the amount you put in your tank at any one time (i.e. phased). Also note that JB weld has a few different product versions available with similar names - I don't think all of them are hobbyist checked to be reef safe so make sure you pick a tested version. If in doubt, Aquastick or similar may be a safer option. You will also want a bunch of super glue as epoxy sticks alone often don't have the best adhesion.

I'd also recommend getting some acrylic rods and doweling large rocks together if possible. This will reduce the amount of epoxy/glue required and form a stronger overall connection.

 

[pugz508]

Marco rocks cement can cure underwater there's statements about it changing alkalinity I believe from leaching lime? There's a lot of stuff on reef2reef but definitely something I'd approach carefully in an established tank with livestock.