Are you running a sump? If so it could be micro bubbles. Could also be a precipitation event caused by Kh. Check paramiters and post numbers and more info on the system.
Are you going to have a skimmer in the sump or just use it for extra volume? Either way I would say at least 2 baffles to control micro bubbles from the return pump.
Yes, that is a big change in SG. I would agree that temperature also had a big part in it. I would leave it alone now. Any damage has been done. That large of a change should have been done over several days.
I run a aqua logic drop in chiller. The main reason for it is evaporation. I was getting 4-5 gallons a day with out it and only 2 with. I still run a fan on the tank and one on the sump. The fans also help with gas exchange so they will always be there.
Mike, how is the treatment going. They should all be dead after 1-2 hours. The good thing is that there are no eggs so once they are gon they are gone. That being said, I would still dose again in 5 days.
Hqi or double ended Use a different fixture for different wattage bulbs
SE or single ended use the same base size for many of the bulbs ( 175-400w that I know for sure)
Everything has been back in the main tank for a couple days and not a sign of bugs. I will give it a couple of weeks before I give it the all clear. Lesson learned.
If you are going to keep it alive then you will have to treat it as if it was in the tank. Keep circulation and heat on it. You will have to do water changes. You will not have to use a light but there will not be any coraline on it when it goes in to the new tank. This is not a problem though it will grow back. Unfortunately there is no easy way to keep live rock live with out some effort.
Why spend $8 every 2 days? If you buy it in bulk you are going to save a ton of money. Enough magnesium to make a full gallon is $10 at BRS. After you raise your Mag to the correct levels a gallon should last you about 2 months. If you need to dose strontium buy a bottle of that You should not need to add it very often. Once or twice between water changes. I use Reef Crystals( by Instant Ocean) I know their a lot of people who use the Red Sea Pro. There are some higher end salts available but I am happy with RC.