MizuFish
New Member
I was hoping someone with some green neon tetra experience could give my boys a quick look, I attached a picture to make it easier.
Is this color loss a sign of a disease or is it stress?
Today was the partial water change day but they've been looking like this for over a week now, before that the red was strong and perfect. They have been kept Angels for a bit that at the end were starting to get territorial, maybe they are still in shock from that? I've tried to add some extra tetra friendly hide outs for just the 5 of them hoping they'd settle down and the red would come back but there's been no change. I only have 5 of them, maybe that is contributing?
My tank is perfectly cycled and when I did a test a minute ago I got ammonia 0, nitrite 0 and nitrate 0 - 5 the line is so slim there.
pH is 6.8 and temperature wanders between 28 and 29C, 29 during the day.
I have a Co2 system added to the tank but nothing they're not used to but for the sake of the live plants I have the light on in the tank for half a day (12 hours).
Sometimes the red comes back a little bit and sometimes it looks like in the picture. Just want them to feel good again

Is this color loss a sign of a disease or is it stress?
Today was the partial water change day but they've been looking like this for over a week now, before that the red was strong and perfect. They have been kept Angels for a bit that at the end were starting to get territorial, maybe they are still in shock from that? I've tried to add some extra tetra friendly hide outs for just the 5 of them hoping they'd settle down and the red would come back but there's been no change. I only have 5 of them, maybe that is contributing?
My tank is perfectly cycled and when I did a test a minute ago I got ammonia 0, nitrite 0 and nitrate 0 - 5 the line is so slim there.
pH is 6.8 and temperature wanders between 28 and 29C, 29 during the day.
I have a Co2 system added to the tank but nothing they're not used to but for the sake of the live plants I have the light on in the tank for half a day (12 hours).
Sometimes the red comes back a little bit and sometimes it looks like in the picture. Just want them to feel good again