[DSlater]

Hoping somebody has advise for us... We just got notified yesterday that rock is going to be blasted in the lot kitty-corner behind us /one over. We have a 220g DT w/ an 80g sump. The tank itself is on a floating floor that is reinforced, it's on a wooden stand with Styrofoam under the tank. The sump is in the crawlspace on a concrete floor but on a wooden stand w/ Styrofoam under the tank as well. The rock work is on the bare glass and the sand was added after all the rock was placed. We're going to try to reinforce the rock this weekend. I really have no idea what to expect. Thinking we'll put a cover over the tank for the blast... should we turn off the return pump and gate valves for the blast and darken the entire tank for stress minimization? Our stock list include a Powder Blue Tang, a Purple tang and a show size male blonde naso tang, 3 blue/green chromis, 2 clowns, pistol shrimp w/ randalls goby, clown goby, starry blenny, cleaner wrasse... as well as 2 cleaner shrimp and urchins, etc. cuc...
Any advise would be greatly appreciated.
Cheers.