DIY Co2- last how long?

[StevenA]

I use the sugar, baking soda, yeast, and water DIY Co2 method, which seems to work very well, but do you just have to make a new mixture every week or two regardless of bubbles, or does it just stop putting bubbles into the tank, and then need re-mixing?

 

[George Farmer]

You're best changing the mixture well before CO2 production stops.

Fluctuating CO2, whilst lights are on, is a huge algae trigger.

A typical mixture should give 10 days output.

You may find this link useful - http://www.practicalfishkeeping.co.uk/p ... cle_id=606