This thread is super, and I really appreciate it.
I feel like the answers to my questions are probably in the comments somewhere, but it's daunting to try to read the whole thing - so I apologize for what is doubtlessly a repeat, and I thank anyone in advance who takes the time to respond to me anyway.
Ich wiped out all the fish in my 125 gallon tank. First symptoms on the 1st, all dead by the 8th. I started treating with API Super Ick Cure, but soon did a huge water change and switched to Ich-X. The last fish died on the 8th, after which I cranked my heater as high as it would go, but it seems unable to get the water super warm - it's 86 for several hours by the end of the day, down to 82 first thing in the morning.
I am still treating with Ich-X. I have not been using salt. I don't have any, but could get some.
I am eager to start over (patience is not my strong suit), but of course I want to put new fish into a healthy environment and not start this nightmare all over.
How long should I continue treating the empty tank? I am hearing wildly different things. The LFS guy said 6-8 weeks with fish, 3-4 without.
If it is relevant, my tank has lots of driftwood and leaves. There are a few struggling aquatic plants (I think my lights aren't reaching the bottom - but that's a problem for later) and lots of very happy terrestrial plants growing with roots in the water (carrot, onions, gladiolus, and lemon balm, off the top of my head) - but the plants are replaceable and if the treatment kills them (or if they have to go for some reason) I'll survive.
Thanks.