@Sleepy, You'll find all sorts of varied opinions on the matter of CO2... And yes, There is a "Perfect" application where in which you plants will get the most out of having boosted CO2... But, I have found that my ladies love having the extra CO2 to drink in! I would not say it a massive difference, just enough for me to notice it!! And with this style of generator being so cheap... Why the heck not?! 😀
I'd recommend changing it out once per week. You can go 2 weeks between wash out/change, but I find 1 week is good.
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