Good Morning,
The last 3 or 4 days, something strange has been happening to my tank: I have very high CO2 levels in my tank when I wake up in the morning.
I have very good surface aeration with nice rippling from the output of my FX5. I throw an airstone in at night and position it under a powerhead. I have triple checked my bubble counter and needle valve - no leaks.
I have dialed back my CO2 to almost nothing. It was at about 2 bubbles per second, now it is down to about 0.5 bubbles per second. Still, my fish are at the surface gasping within 1 - 2 hours of the lights being on. The fish are fine overnight with the airstone in.
For my CO2, I use a diffuser under the intake of my FX5.
I am at a loss at what would cause this.
Possibly Relevant Events
- I have been lightly dosing Excel (1/2 dose) to get rid of some algae. It is my understanding that Excel does not affect pH. My drop checker is consistently yellow in the morning.
- I have changed my substrate about 3 weeks ago.
- I cleaned my filter last weekend.
I am at about wits end. I end up taking a couple buckets of water out and dumping it back in to create oxygen and am having to leave my airstone in during the day.
I am just trying to understand what is happening. Any suggestions?
J
The last 3 or 4 days, something strange has been happening to my tank: I have very high CO2 levels in my tank when I wake up in the morning.
I have very good surface aeration with nice rippling from the output of my FX5. I throw an airstone in at night and position it under a powerhead. I have triple checked my bubble counter and needle valve - no leaks.
I have dialed back my CO2 to almost nothing. It was at about 2 bubbles per second, now it is down to about 0.5 bubbles per second. Still, my fish are at the surface gasping within 1 - 2 hours of the lights being on. The fish are fine overnight with the airstone in.
For my CO2, I use a diffuser under the intake of my FX5.
I am at a loss at what would cause this.
Possibly Relevant Events
- I have been lightly dosing Excel (1/2 dose) to get rid of some algae. It is my understanding that Excel does not affect pH. My drop checker is consistently yellow in the morning.
- I have changed my substrate about 3 weeks ago.
- I cleaned my filter last weekend.
I am at about wits end. I end up taking a couple buckets of water out and dumping it back in to create oxygen and am having to leave my airstone in during the day.
I am just trying to understand what is happening. Any suggestions?
J
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