I feel you pain Michael I've been there. first off dont throw in the towel yet you've ome to the right place there are many people here that can and will help. starting with me.
A. it seems to me that everything you put in your
QT seem to come down with the same problem.
Ich is most often brought into the tank on new fish or plants (not if they are quarantined!). However, it is also believed that some survivors of an Ich infection can become latent carriers, with the parasites forming a latent stage at protected sites such as the base of fins or the gills. it usually takes about 3 weeks from initinal contraction for it's free floating stage for you to be able to see it on your fish.
i would guess that it might be coming from you
LFS this will usually apply if you keep buying fish from the same place. try going to a new store and see what happens. do you see ich in the store on other fish? most stores have one large filtration system for all the tanks so if one fish is sick they all can get sick.
B. I'm battling hair algae also as alot of us are. first thing is keep pulling it out of the tank keeping as little of it from floating around as possible. next try to remove as much
phosphate as you can for your tank by either getting a
phosphate removal system such as a phosban 150 or a
phosphate removing filter pad these are usually cheaper and can be found a
LFS they are an aqua/green color. then shorten you
photo period. hair algae id photosynthetic shorten you
photoperiod and it will greatly inhibit it's ability to thrive. my tanks light are on for about 8 hours a day while I'm trying to get rid of it.
well I'm don't ranting you'll get alot more advice here and i hope we can help you through this to keep the hobby alive with at least one more person.