[howdy20012002]

SK, please give one document that proves what you have stated...not all fish have Ich...it can be treated and removed 100 percent by hypsolanity.
ich cannot remain dormant for more than a month which is why you leave your tank fishless for over 4 weeks, preferably 6 weeks.
I have killed a few fish trying to treat with Copper but I haven't killed one fish with hyposalinity.
the only thing that SK said that I agree with is that you should quarantine new fish for at least 2 weeks.

DF - From the sounds of it, you have a fish only tank.
if you don't have any inverts, snails, or corals, i would lower the SG of your tank between 1.010 and 1.013 and leave it like that for a month.(hyposalinity)
this is will kill off the ich. read up on the internet and see how to do this.
You basically just add fresh water to the tank until the salt level drops low enough.
if you still have the cleaner shrimp, remove it before you lower the SG.
you cannot leave anything other than fish in the tank though cuz it will kill it.
Copper isn't a 100 percent effective and you have to be very careful how much you add as it is toxic and will kill your fish.

You should not have a tang in a 32 g as it doesn't provide enough swimming space.
I have a very small purple tang in a 29 gallon, however I am preparing to move it into a larger tank when it gets bigger.
IMO, you don't need a skimmer for a tank. Lots of my tanks don't have one.
However, that means that you will need to do more water changes as the water will foul quicker.
Ich will not hurt your LR.
is your fluval a canister filter? if so, I would get rid of it...they tend to just become nitrate farms.
filtres, IMO aren't really necessary. I have hang on's on my smaller tanks but just to keep the surface of the water clean.
You can have just a powerhead in there that is at least 10 x the gallons of your tank and that will suffice.
in a 32 gallon, opinions vary, however, I would say that 3 -4 smaller fish would be fine.

I am sure others will have things to add...and I sure that others will disagree.
However, I am just giving you my advice from my own personal experience.

HTH
Neal