Ok I originally purchased a 20 gallon tank(november) to setup a saltwater tank and took it home. Went later that day to a petstore to get stuff for my sugarglider and saw a 55 gallon tank and I said to myself you know what its time to upgrade that little 20 gallon.

So I did.

Now my intentions were to setup the second tank as a QT tank or just a second tank. I was never able to set it up because my wifey wanted to place the christmas were I want the tank well she won

Now Christmas is over tree is going DOWN but so are my 4 damsels. They have what I believe is ick lots of white spots when I woke up this morning. Now I believe the best course is to try to get my 20 gallon setup ASAP as a ER but don't know hot to go about it exactly. Here is my setup:
55 gallon:
Heater (main tank), Coralife superskimmer (sump and output goes back into the micron bag), 25 micron bag (sump) via aqua pump 1800 (sump), probably only 6lbs of live rock, small little area of cc ( maybe 10% max) the rest is sand. Hard to tell if ammonia is 0 or a little above zero because of its color, nitrite is 0, and nitrate is a little below 10. Also I have a crap load of brown algae which I understand is nts (new tank/tap syndromea and planning on doing a 10 gallon water change with RO water)
Stuff already avaible for my 20 gallon:
Heater, single marineland bio-wheel filter, dual bio-wheel marineland 350 was used to cycle my 55 till last week when I place the sump in there then I removed it since then I have kept the wheels in my sump. Should I not do it I just did not want them to dry out? I also have some CC sitting in it.
Any help is appreciated