Uhhh, too much co2 i think, fish dont look good

[jmhart]

Like phan mc said, 1 package of yeast per bottle is extremely excessive. You only need about 1/4 tsp yeast per bottle.

If you have an airstone, put it on a timer so that it comes on at lights off, and turns off 2-3 hours before lights on. It'll solve your problem.

 

[SuBXeRo]

i was talkin to inka, he had said that the use of an airstone may flucuate the PH too much between a co2 full tank and then a rapid release of it.

I followed a recipe that he also suggested from aquatic eden, it lasts about 2 weeks or so which is fine.

i will put the airstoneon a timer as suggested until i figure out some better surface agitation stuff, ph or what have you.

 

[rocker92]

do you have a filter in the tank??? is the water on top "rippling"?

 

[SuBXeRo]

i have a 2217 with spray bar submerged, no rippling

 

[jmhart]

pH fluctuations due to CO2 are insignificant to fish. The real reason we are concerned with pH changes is actually due to the changes in TDS. Fish don't like rapidly changing levels of TDS.

pH fluctuations from changing levels of CO2 are fine.

You'll be able to get just as good of an output of co2 by using less yeast, and it'll save you some money. Standard DIY CO2 recipe is

1/4 tsp yeast (activated)
2 cups warm water
2 cups sugar

optional
pinch baking soda


And that'll last you ~2 weeks with perfect output.

 

[Canuck]

If it were low O2/high CO2 I would have expected the fish to be at the surface where O2 levels are higher. I also suspect that those with healthy fast growing planted tanks that aerate their water at night, actually, reduce their O2 levels. Despite the fact plants do respire at night, they are net producers of oxygen (when healthy).