Arggghh, looked at my tank last night and noticed my common pleco had died 
So far cannot figure out why and was after some suggestions.
I moved the tank to my new house about 4 weeks ago but took great care in keeping filter/substrate wet and have since been checking water params and everything has been looking fine (no spikes at all).
Checked water again last night and again all fine. I had noticed over the last week he hasn't been eating the cucumber like he normally does but didn't think much of it at the time. I tested the tap water when i moved in and all was the same as my previous house apart from the PH. At the old place it was about 8.4 and at the new about 7.4. But i have only been doing 25% changes a week so it should be bringing it down slowly.
All the other fish are fine. The tank has been up and running for a total of about a year and a half now with no major problems. It is a 25g (UK) tank with the following fish:
5 x cardinal tetra (1")
1 x gold gourami (3")
2 x rainbow fish (2")
3 x pearl danio (2")
1 x zebra danio (1.5")
2 x platys (1.5")
and was 1 x common pleco (RIP) (3.5")
Water is 0 ammiona, 0 nitrIte, and 50 nitrate. (nitrate a little high but tap water is about 20 and has always been this way).
I have done the rough 1" of fish per gallon and i think i'm just about ok. I have a fluval 404 external canister filter which is way over powered for the tank so the filtration should be fine.
So far cannot figure out why and was after some suggestions.
I moved the tank to my new house about 4 weeks ago but took great care in keeping filter/substrate wet and have since been checking water params and everything has been looking fine (no spikes at all).
Checked water again last night and again all fine. I had noticed over the last week he hasn't been eating the cucumber like he normally does but didn't think much of it at the time. I tested the tap water when i moved in and all was the same as my previous house apart from the PH. At the old place it was about 8.4 and at the new about 7.4. But i have only been doing 25% changes a week so it should be bringing it down slowly.
All the other fish are fine. The tank has been up and running for a total of about a year and a half now with no major problems. It is a 25g (UK) tank with the following fish:
5 x cardinal tetra (1")
1 x gold gourami (3")
2 x rainbow fish (2")
3 x pearl danio (2")
1 x zebra danio (1.5")
2 x platys (1.5")
and was 1 x common pleco (RIP) (3.5")
Water is 0 ammiona, 0 nitrIte, and 50 nitrate. (nitrate a little high but tap water is about 20 and has always been this way).
I have done the rough 1" of fish per gallon and i think i'm just about ok. I have a fluval 404 external canister filter which is way over powered for the tank so the filtration should be fine.
