We really need to know your parameters before we can suggest much.
Edit: and there they are!
Keep up the PWCs until the nitrite is under control. Have you cleaned your filter recently?
We really need to know your parameters before we can suggest much.
NitrIte way way way to high!
Edit: and there they are!
Keep up the PWCs until the nitrite is under control. Have you cleaned your filter recently?
Chances are your fish are not going to live through the night.
Salt will kill them, the only thing you can do now is WC to get everything down. Like a full 90%.
I feel like you not telling us all the info, a tank doesn't go off the chart over night.
Leave the fish in the tank and do some water changes. Not sure about massive changes like 80-90% this might add to your problems.
This is not necessary (my opinion only), small regulars are key to small tanks. It does sound stocked up though. Nitrite is bad for any fish, I won't go into the science, trust me, ammonia and nitrite can kill in small doses, it gets more lethal depending on pH an temp. Adding salt (depends on salt) could alter the pH,GH,Kh. Given the test readings I don't see how it can benefit fish which really are not accustomed to salt of any kind. They are not really fans of high pH. (That's the tetra)
The problem clearly seems to be nitrogenous.
A general plan,
You should aim for a Saturday and Sunday, Tuesday and Thursday, no matter what, if your late for school or practice, fish come first. (If my tanks go out of line, which can happen, I do not go to work, i can't earn enough in a day to replace all of my fish) I use four changes on my smaller tanks, except the puffer fish, he's on a weekly cycle but he's an isolated specimen in 16G/60 litres.
20-25% each time, testing Monday and Friday. Make notes of test results, diary/journal your tank history. If you still keep fish in five years this information will be useful. You should find that's enough, if not you have too many fish. You will see that's possibly too many water changes, this is where you want to be, on the good side of water quality. (When you get confident in your test result data you can ease off testing until you think something is wrong, if you stick to the plan, things shouldn't go wrong too often)
You can alter the days around your evening activities but really to change out water on a 10 g should only take 5 minutes. 5 minutes is nothing.
I hope they survive.
The tips of one of their fins is black... Should I be concerned? Should I add some salt to help relieve stress? Got my bubbler going too...
Get your mind off of salt, I don't know where you got the idea that salt = stress relief but its the exact opposite. Salt burns the fish and causes stress.
Nitrites still high, ammonia is between 0 and .25, nitrates have lowered to 40 ish