Ich sighting, think I caught it early, need advice
So today I came home from work and spotted two white spots on the dorsal fin of my Flame Gourami. Please see my signature for my fish and tank specs. I added the gourami and the tetras about a week ago, and the Ram two days ago. I drop acclimated all of them, but no quarantine. My water parameters as of yesterday were near perfect, 0 ammo, 0 nitrites, 10 nitrates.
Prior to spotting the spots, I never noticed any of the other tell-tale symptoms of Ich. Because it seems that I have caught it early, I immediately went out and got a small quarantine tank for the Gourami, hoping the Ich hasn't dropped and multiplied.
So right now I've got the gourami in the quarantine, and the rest in the main tank. I bought a small bottle of Malachite, should I use it on the quarantine tank? Right now I'm playing the situation as thought I MAY have isolated it, and if I lose the Gourami I lose it. Based on my fish, can I turn up my heat in the main tank to combat this assuming this is still in the main tank? If that's not enough, what else should I do? Also, I really would like to avoid salt in the main tank because I don't want to hurt my plants, so is just heat better than nothing?
Update: Gourami not looking good, probably going to lose it. Main tank is priority.