I've been running two tanks now for the best part of six months.
Every week, I do a 25% water change. My fish have been really happy but for the past couple of weeks.
My Siamese Fighter got an eye infection, but that passed pretty quickly, but since then my plants have been turning furry (for want of a better word) and one-third of my aquatic life has died in my larger tank, including one of my prized clown loaches - poor Pascal!
I have now been left with (in my larger tank)
1 x clown loach
2 x x-ray tetras
1 x siamese fighter (male)
5 x harlequins
5 x neon tetras- these seem impervious to whatever it is
4 x cherry barbs
3 x ancistrus
1 x Dalmatian molly
3 x zebra danios
The x-ray tetras are looking decidedly ragged and quite opaque and the female cherry barbs are looking as though they've been dipped in icing sugar.
I've done a 50% water change today as a precaution, but I don't understand what's gone wrong. I clean the filter (in water taken from the tank) every other water change and I don't want to lose the rest of the fish but I seem to be powerless against whatever's ravaging them.
Also, I had some bogwood in the tank, and it had some white growths on it. I have now removed this from the tank and don't plan to put it back for the foreseeable future.
I expect to lose the rest of the cherry barbs and x-ray tetras in the next few days, but I'm desperate not to lose my final clown loach - they were a mother's day gift from my children.
Any help would be gratefully received.