CO2 Responsible for Fish Death?
- Thread starter drseuss
- Start date
It certainly can happen. At night, instead of using CO2, plants use oxygen. This can deplete the oxygen levels in the tank. Do you have sufficent surface agitation? Some people also stop their CO2 injectors at night, or add an airstone at night.
Sudden pH drops can also kill fish. Have you checked your pH first thing in the morning?
Sudden pH drops can also kill fish. Have you checked your pH first thing in the morning?
I have 2 powerhead quickfilters running (without oxygen), so there's movement, but no bubbles... to keep co2 from escaping... I haven't been checking my pH since I started the tank (have been using pH 7 additive, which has worked for the fish, but apparently isn't great for the plants...so I have just begun using a product called pH stable. Probably all the change in so quick a time wasn't great for the fish). I know I'll need to get a pH tester now. Just trying to keep costs down. My tank has been a bit of a money pit...lol...
The angel fish probably killed the other fish, you say they are breeding? A fellow in our aquarium club who breeds angels told me once that angelfish can be very aggressive during spawning.
I'd say it is highly unlikely co2 overdose killed fish.. Co2 does not replace oxygen, you can have high levels of co2 and still have high levels of oxygen, even at night
PH shock could kill them too if it's yoyo'ing at night.
I'd say it is highly unlikely co2 overdose killed fish.. Co2 does not replace oxygen, you can have high levels of co2 and still have high levels of oxygen, even at night
PH shock could kill them too if it's yoyo'ing at night.
You can measure the amount of co2 by testing your ph and kh. Use this site to calculate
http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm
there's also a chart which tells the safe levels of co2 and dangerous levels.
http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm
there's also a chart which tells the safe levels of co2 and dangerous levels.