Your normal PVC cement should be fine as far as I'm aware, if not then I'm sure someone will chip in. Usually a frame will be a U shape so that the rocks at the top will not topple over, e.g. the U shape is on it's side (hope that makes sense)!
You then need to drill holes in your rock and then feed them into the PVC tubing and stick into place. I think it sounds more difficult than it actually is. I have seen a few pics where there has been some fantastic rock overhangs and can be very effective. I suppose the only tricky bit is planning where all the rocks will go.
Found a picture on this site of someones frame they built: PVC frame for Live Rock - 3reef Photos
This thread is also great, get to page 2 and you will see how he constructed his rock with lots of pics too. In fact I have never seen this method before and it's pretty cool: My 220 build - Vivid Aquariums Forums
Good luck and post some pics so we can see how you get on.
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80gal with live rock (35kg/70lbs), 30gal sump, refugium with live rock, chaeto and DSB, Bullet-1 skimmer, Fluidized Reactor, T5 lighting (6 tubes), 4 x Koralia 3's.
Last edited by Frizza; 03-28-2008 at 05:41 AM.
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