Ok, you've killed the bacteria you had but as you say, there didn't seem to be much going on anyway. At worst it will just prolong the process. Keep up the water changes and all will be good.
Now, the ich. Raise the temperature to about 28C, blackout the tank (towels and blankets are great for this) and add the treatment. Keep up the water testing and water changes, just make sure you replace any meds removed in the water changes. Run a full course of meds but keep up with the warmer water and blackout until the neons have recovered. Could take a week or so. With all the water changes you should be safe to repeat the course of meds after a week if you need to, but the packaging should advise on that.
Popping your spare sponges in a mature filter for several days (or as long as you can) will help seed them but you'll still need to keep up with the water testing and changes. Don't rely on them fully cycling your filter for you.
I don't mind the process the water changes aren't bothering me to be honest... frankly I believe the more I get use to do them now and dare I say ENJOY doing them now. The more enthusiastic I can get my girlfriend into performing the weekly routines herself without help.
It just keeps getting worse and worse for my girlfriend, I'm however extremely pleased with the fact we have caught it as soon as it has actually become visually apparent. (I have actually been specifically looking for it since day 1 as well as fin rot. Due to bad reviews of P@Hs with such) Fortunately I have found a much more local aquatic store stocking a medium variety of freshwater fish and I am not joking when I say its under 500m from her house.
My friend recommended me raising the temperature to 28c as it will help prevent further cycles of the Ich, can we confirm it will not cause the neons any harmful side effects or discomfort for a period of a few days to a week?
The eSHa EXIT medication states for the quantity of water my girlfriend has (60L)...
Day 1 - 12 drops
Day 2 - 6 drops
day 3 - 6 drops
it then states the medication should be complete, we have also removed light coloured ornaments as it can apparently stain them.
Blatantly the medication is not complete however I cannot recall what it says about prolonged treatment but I believe it just goes on to say about extending the 6 drop treatment.
Regarding water changes when medicating, today was day 1 of the medication we are arranging to do another water changing at just before the time we medicated today (6pm). We will be obviously diluting the medication significantly when water changing, is it the case just to carry on with the 6 drops after the water change? I was under the impression the medication degrades over time and you are "topping it up" each day and the top up won't be so effective when you've just removed a large majority of what you're topping up.