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Discussion Starter · #1 ·
My tank has a co2 ppm of 2.5

I've added a diy co2 running through a bubble stone and within 1 hour the ppm goes to 100

Is there a special mixture that you have to use on a smaller tank? If so can someone point me to that direction.

I have RCS and 1 otto in the tank. The otto freaked out whenever i add the co2 that's when i tested it and figured out the ppm were too high.
 

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The amount of yeast determines how quickly the sugar will be metabolized. If you are getting too much CO2 back the yeast down.

What is your recipe?

For my 10G I use 1 Tsp of yeast and 1 cup of sugar and have not yet had any issues. I run the airstone under a small submersible filter to disolve all the bubbles.
 

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Discussion Starter · #3 ·
I had it backwards, I thought the more sugar you put the stronger it was and the more yeast you put the longer it lasted?

I must admit, i had setup my tank before and the bubbles didn't last more than a week. so this time i dumped the whole pack of yeast in it which might be what is causing the issue.

I put 1 cup of sugar to 1 pack of yeast.

I am trying to get a slow bubble that lasts a long time. If you have any recommendations on recipes for this please reply.
 

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The recipe that I use (1 Tsp yeast w/ 1 cup sugar) has lasted 2 full weeks. Around day 10 it starts to slow down through, so I usually just replace the whole mixture every Monday during my WC.

I do this at work though, so maybe you could get away with letting it run out for a few more day, I just want to keep a steady schedule around the weekends.

My method:

Pour 4 cups of HOT water
Add 1 cup of sugar
Shake until fully dissolved
Add 2 more cups of COLD
Allow to sugar water to cool to room temperature
Add 1 Tsp of yeast
Shake until mixed well, sometimes the yeast likes to clump
 
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