Hi, newbie here. Looks like a good forum.
I need some help please. Here's a lot of info to give you the best chance of helping me.
I've lost two or three Plattys in the last few weeks, without apparent illness, they just became listless and died. My concern now is for my (approx) 8 year old Plecostomus. He/she isn't feeding much, and flicks up at the top of the tank carrying air down in its mouth. Yesterday, I noticed he has what looks like a red rash on his underside. I attach a picture, sorry about the poor quality, but I needed low resolution to fit on the board, so I used my phone.
Water parameters: Ammonia 0 ppm, nitrate 0 ppm, nitrite 0 ppm. pH 7.2, temp 25 deg C, Hardness - very hard (off the scale) - test kits are old though, except pH which is new.
Water changes 30% once a month - I know!
Tank mates are 12 or so red-eye tetras, 3 cherry barbs, one platty, 4 cardinal tetras
Tank size 250-300 litres (approx)
No new fish added since the Plattys in about September
The tank usually takes care of itself and is very stable. About 4 years old. Good undergravel filtration, and a small box filter (powered).
I have had more algea than usual lately, perhaps because of the inactive Plecostomus, perhaps not?
I've been very slowly reducing the pH from 7.4 (we have alkaline tap water).
Any ideas please?
I need some help please. Here's a lot of info to give you the best chance of helping me.
I've lost two or three Plattys in the last few weeks, without apparent illness, they just became listless and died. My concern now is for my (approx) 8 year old Plecostomus. He/she isn't feeding much, and flicks up at the top of the tank carrying air down in its mouth. Yesterday, I noticed he has what looks like a red rash on his underside. I attach a picture, sorry about the poor quality, but I needed low resolution to fit on the board, so I used my phone.
Water parameters: Ammonia 0 ppm, nitrate 0 ppm, nitrite 0 ppm. pH 7.2, temp 25 deg C, Hardness - very hard (off the scale) - test kits are old though, except pH which is new.
Water changes 30% once a month - I know!
Tank mates are 12 or so red-eye tetras, 3 cherry barbs, one platty, 4 cardinal tetras
Tank size 250-300 litres (approx)
No new fish added since the Plattys in about September
The tank usually takes care of itself and is very stable. About 4 years old. Good undergravel filtration, and a small box filter (powered).
I have had more algea than usual lately, perhaps because of the inactive Plecostomus, perhaps not?
I've been very slowly reducing the pH from 7.4 (we have alkaline tap water).
Any ideas please?