Considering doing a restart on the 92G corner tank. I have been fighting a losing battle for 2 years against red/blue clove polyps. I thought I had the upper hand for a while by doing aggressive toothbrushing. but the victory was only temporary and they have come back ever stronger. I've tried the suggested treatments; raising mag and reducing white light to no avail. I have not tried a long spine urchin which supposedly might work (I think finding the right species to the pest is too much of a crap-shoot).
I plan to move the fish and corals out to the frag tank incrementally and make sure that the clove polyps don't come along.
I haven't decided whether just go dark and wrap the tank in black plastic for a month or go dry for a couple weeks and then restart with a separate skimmer until water quality reaches acceptable levels before reconnecting the systems.
Sounds a lot like my Majano problem, except more colorful.
If you are spending all the effort, I would suggest a complete reboot. Dry, maybe even some bleach.
Once things are out, it is not so bad, and you are then SURE they are gone.
It allows you to make a few repairs/tweaks to the tank that might be pending.
And you can really scrub the old rocks/sand/tank. That means no giant nitrate explosion when you restart.
Although it does mean a full cycle and the long time that takes, so your "temporary" system needs to be done well.
