DIY CO2

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It's super easy to make and super cheap too.
 
In my 55 gallon aquarium I use 400g sugar, 4tsp baking soda, 1tsp yeast. I run 2 diy co2 soda bottles. Start off using 1/4tsp yeast, you don't want your pH to crash. Then increase it gradually til you get the pH you require. (thanks to canoe and gf for that info)
 
Reduce surface agitation as much as possible
 

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