Aquascaping established tank

Not usually something I would consider doing, but apparently, my previous design isn't working. I've noticed over the past week that one side of the rock work is slowly caving in. [smiley=uhoh.gif]

Has anybody had to go through this after stocking? Should I use PVC framework? Has anybody used the underwater epoxy while there is life in the tank? Cable ties? Should I put egg crate under the rocks while I'm at it?

I would actually like to do a total re-design but honestly am scared silly, please, somebody help!! [smiley=dizzy.gif]

 

I've done it twice. With zero Losses. I haven't really used and product to hold my rock together. I did it mainly to provide better flow to areas. I used a shallow rubber maid tub and drained some tank water and pulled as much rock out as I needed. Then just put it back were I thought it would work better.

J

 

Good call on the rubbermaid tub. I've got a couple of extra powerheads sitting around I could use to keep things stirred up. Maybe this will be a good chance to remove the small, coral eating starfish I've notice this morning..they are suddenly everywhere!

Thanks! [smiley=2thumbsup.gif]