HELP - cloudy after water change

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What I don't get is I have a pH controller in my tank if it did dump a lot of co2 in the tank the controller would of turned it off and when I checked the pH with the test kit it after everything died it was at 6.7 right where I keep it did this happen because it was trying to keep up after being off for a day
 
What I don't get is I have a pH controller in my tank if it did dump a lot of co2 in the tank the controller would of turned it off and when I checked the pH with the test kit it after everything died it was at 6.7 right where I keep it did this happen because it was trying to keep up after being off for a day

An EOTD didn't occur. Don't worry about that. You had already had the co2 off the tank when the shrimp and fish died.
 
I think I'm just going to put the carbon back in the chem filter for now and clean up the tank and start over
 
It was most likely a "mini" cycle it went through. I had the same thing happen to me. There prolly a small spike in your ammonia during the night after you changed your sponge. The cloudiness was a bacteria bloom. How is your stock doing now? Anymore die off?
 
No more died what should I do to keep this from happening again
 
No more died what should I do to keep this from happening again

Make sure when you rinse your sponges with dechlorinated water before you add it to the filter. I never change my sponge unless it's falling apart. No chlorinated water should touch your bio media or sponge because it will kill any BB.
 
I think it was my pH that caused this to happen so I'm going to put my co2 on a timer so it turn off when the lights go out and maybe put a air stone in the tank
 
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