Can you have too much CO2

[laurenrocksth]

I am strongly considering adding DIY CO2 to my just planted 55. I was going to use a yeast sugar mixture that was referred to me by another AC member. This is all mixed together in a 2L bottle. My question is should I have more than one CO2 bottle going in the tank at once or is the one bottle (reactor?) enough? I don't want to OD my fish on CO2 which I guess is bad.

 

[brentling]

There are several articles and threads throughout AC about DIY CO2. I think they usually suggest 2 bottles for a 55. Yes you can use too much CO2 and kill your fish, but not likely from yeast/sugar. Make sure you read some first before setting this up so you understand what's going on

 

[Mgamer20o0]

its hard to do with pressurized it highly unlikely for diy. you prob will want 3-4 if not more. diy isnt very good for anything over 20 gal.

 

[J double R]

I made DIY work with 2 bottles quite well on a 75g tank, you should use 2 bottles on the 55 and it will likely do you just fine.

 

[jake gillespie]

yes it is very possible to have too much c02 everythingis a poison in high enough concentrate... except fish stuff!!! lol

 

[Squawkbert]

I've got very minimal surface agitation (nearly none) and pretty good diffusion of the CO2 into the water on my 46g tank and I use 2x 1 Gallon DIY bottles w/o ODing.