Anyway to add strength to existing rock work?

We've been scrubbing GHA off of the rocks with a tooth brush for over an hour and have made a compete mess of the tank. There is no way possible to get the rock work back the way it was and when one thing fits perfect everything else wobbles and is very unsteady. There are quite a few corals attached to the rocks so we are limited on how many ways we can turn the rocks. Is there anyway or anything we can use to anchor the rocks while they are in the aquarium? Any kind of putty that works underwater that wont harm fish? Or are we out of luck and destined to fight with it all night long?

 

reef epoxy

the putty/dough stuff you mix together then put the rocks together and it cures i know some people make arches and stuff like this

 

Do you think standard plumbers putty/epoxy would do the trick? Wal Mart is all thats open around here after midnight and thats all they carry.

 

some large pvc pipe rings twisted into your subrstrate (if your not going BB) should provide a good base for some of the rock

 

The epoxy is the best and easiest way to strengthen your rock work. What your looking for is under water epoxy. It comes in a long roll that is blue/green on the outside and white on the inside. I've gotten it from lfs, but also from a local hardware store. Just make sure it says it is meant for underwater.

 

I have been hating the reef epoxy lately and wish it was more effective than it is. The stuff frustrates the hell out of me and is only useful for bonding rocks a little more after you have it stacked well in the first place. I have tried two different brands. Doing custom work with it just does not work well IME.

I do like the idea of using the acrylic rods and drilling holes into the live rock and joining it that way.

After you have everything in place for a few months coralline will strengthen it further.