I'm in the UK too, my local P@H don't stock JBL products. It’s mainly interpet and tetra, and i'm not familiar with them. Where about in the UK are you? If you have a Maidenhead Aquatics local they should stock JBL stuff.
Interpet do a simple methylene blue which will do the job in the medication tank, but it doesn't include the extras the JBL Ektol fluid does.
Hmm the carbon (if unused and clean) my help to begin with, but it may leech back into the water, also if your using chemicals you don't want to use carbon as it will absorb them too. Interpet “ammonia remover” is ok and try adding about 5ml a day for a few days and see if you see an improvement in the main tank. Also you'll need it for the medication tank too as it hasn't got a mature filter (which would only get hammered by the meth blue anyway)
The medication tank sounds fine for the fish. If you’re in the house all day I’d do ammonia tests every 6-8 hours to make sure the ammonia isn't creeping up. It's all you need to begin fixing the fish only to kill it with ammonia.
Well i'm back, i am in Corby, Northants and i visited pets at home and another place called pet warehouse or something like that.
I managed to get my hands on some Methylene Blue by king british (pet warehouse pets at home did not stock)
and some ammonia remover by interpet and also some API tonic aquarium salt.
I could not find any Ektol unfortunatly so hope this works.
I couldn't get an airpump as i didn't have enough cash. But the filter should be fine as it adjitates the entire surface of the water.
I will add ammonia remover and aquarium salt to the main tank and then dose the treatment tank with meth blue and aquarium salt also.
I am not sure on using ammonia remover with meth blue though? Is this ok to do so just incase the ammonia levels creep up?