

New here - though have read many things and followed some advise.
Not sure if this should go here or under freshwater illness...
We have a 10+ year old common plec. 13" by himself in a 25 gallon.
Have been waiting to get a 65 gallon until he seems well. Don't want to stress him with a move if he's not 100%.
He has been getting constipated every few months for a while now.
Usually for a day or two. The most was a week. Peas always helped.
The week scared us and we dosed with epsom. 3 - 5 tsp per day for 5 days.
Worked! He was back to normal fior 2 months.
It happened again. End of Jan. Tried the epsom again. Didn't work.
He pooped a bit. He ate a bit, but never back to normal.
We tried 6 doses of kanaplex and with the last dose started 6 doses of metroplex. He seemed to poop a bit, but last 2 times was mucos, not green.
He's only been getting a few peas a day.
In the beginning we fasted for 3 days.
We dosed the peas with garlic, metro & epsom.
He ate some.
He has a bulge on his side (see pictures) - that he seems to have always had but it gets more pronounced when he doesn't poop.
The whiteness on the bottom near the lateral line looks worse in the pictures.
The pictures don't show our concern - the left part of the line where it goes up has some small red scrape looking dots? Maybe 3.
He reacts normal, goes up on the glass - though very infrequent lately, ate a bit of zuccini...
Amonia is .25 with the meds - we've done about a 1/3 water change before each dose.
Nitrite is 0.
Nitrates are 5.
PH 8.2 - always.
What could this be???
What else could we do???
We have the last dose of metro tomorrow.
Then will put back carbon and let him take a break from meds.
Oh - there has been epsom in there too. 6 tsp. Replaced proportionally with water changes.
Thank you all for any suggestions!
