Charitetata,
Hi & welcome, firstly apologies for my delay in answering. Ok, just to add a bit to the advice "fish keeper sharks and mollies" gave you. If at any point you feel like we are teaching you to suck eggs please shout.
The first part is to just say that although plecs do not like salt and yes it will burn them in high concentrations there a train of thought that a small amount of dissolved salt over a short period of time for a treatment such as Ich should be ok, just keep an eye on your plec. If he looks stressed then look at water changes to lower the amount of salt in the tank.
I would also suggest gradually raising the temp (over a day or so) to 84 - 85 and adding an Ich med now. Basically the salt and temp is doing it's part but unless you have another tank you can transfer all your fish to the salt / temp is doing as much as it can by removing the Ich from the fish and into the water itself.
Ich is a fairly hardy parasite and the only time it is really suceptible to medication is at this free floating stage, ie, where it has left the host fish and is looking for a new host.
Now the Ich is free floating, it normally has a 5 - 6 day life cycle to find new host or it dies, by upping the temp the you reduce this life cycle to 3 or 4 days. This is where the Ich med has the chance to work.
So all in all....
25% water change.
Raise temp gradually to 84 - 85 (if your fish will accept this).
Treat with an Ich med (for scaless fish if you can get it, if not I have treated with a normal Ich med at half dose) remember to remove any carbon from filter if you have it (carbon will remove the medication from the water) , follow the treatment for the Ich med
right through the course.
One the med has run it's course do another 25% water change and add carbon back into your filter.
Your good to go.....
On the nitrates question again "fish keeper sharks and mollies" was pretty spot on, in an ideal world NitrAte should be at zero all the time but in the real world this doesn't / can't / won't happen. Some areas actually show 40ppm NitrAte straight from the tap !!!???
The figure you have been given of 40ppm is a good guide to keep your fish happy. 110ppm is high but I have heard a figure of 150ppm being banded around as an upper limit. Anyway like I said if you can keep it around a max of 40ppm you will be giving your fish a comfy life.
I hope all of that inane rambling has provided you with some useful info but if you have any more questions please shout.......
Oh BTW the way if you do get time please let us know how you got on, "fish keeper sharks and mollies" & I will both be interested to see things clear up.....
Take care and good luck......
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