Gee, 2 pages since last night.
I love the new crypts. Don't be surprised if some of the leaves "melt", some do it more than others. It's crypt version of transplant pouting. Just remove any mushy leaves & let them alone. They will recover! Just leave the other plants alone for now while you're busy medicating. & no, the salt in the med. will not hurt the plants for the treatment duration. In your latest pic I see a spot in the middle of 1 ram forehead & a faded? looking spot above an eye on the other. Could just be where ich was but keep an eye in those.
I have to disagree with tl on the co2 thing a bit (yeah, we often do things different, lol). You're not injecting co2 or even using Excel so the tank gets co2 from the atmosphere. Surface movement can only help with that. Keep an eye on your KH, I have soft water too but maybe not as soft as yours. I aim for say, 50+ ppm as a minimum (or 3+ GDH, I forget which the API tests in). If you need to raise it a bit, a pinch of baking soda is the cheap & easy way. But you want to keep the level fairly consistent or some algae may get too happy. You may need to increase it as the plants grow. That was 1 of the things I had to learn when moving from hardwater areas to soft.
You also want a fairly consistent nitrate level or, well, different algae can be issues. As you get new stem plant growth you should plan to pinch or snip off the pretty top 3 inches & replant them. & either leave the "stumps" & hope they grow or remove them. You've got lots of plants now, give them a chance to see how they grow for you.
The only thing I'm missing from your tank is some reddish color plants. After the meds & how your plants are doing, think about a crypt wendtii red or "mi oya" just for a change of pace...