So I want to put some GSP at the very tip of my rock...only problem is that it would be exposed during water changes. Would it be ok if I keep the lights off and splash it periodically while doing the water change? It would be exposed for like 5 mins tops

perfectly fin. low tide occurs everyday exposing corals

GSP is really hardy. It will be fine. I've exposed zoo's during water changes and never had a problem.

I don't even move my frag rack during water cahnges. It could be 10-15 minutes with the entire farg rack out of the water and they all open back up a minute or 2 after the water comes back up and the lights come back on.

I do splash the frags with water once or twice durring the cahnge though.

low tide click the link

nice vid... proof is in the puddin.

yep you will be fine, just like fragging corals out of the water