Excess DIY CO2?

[Gnome]

Is there a way to control the flow of DIY co2?
or to reduce the level of CO2 diffused in the water
will reducing the dose of yeast and sugar works?
I will be using eheim filter to diffuse the CO2 into the water but now I' using airstone, my ph drop so low from 6.9 to 6.4/6.2..help please.

[Somonas]

If you reduce the amount of yeast in your mixture, but keep the same amount of sugar theroetically your co2 production should be halved - I am in the process of testing this theory in my tank right now. usually I use 2 cups sugar 1/2tsp yeast but since I only had 1.5 cups sugar left! I used 1/4 teaspoon yeast. So far so good

your PH drops too fast cause too much co2? Just add more plants. they'll use it.

I wouldn't try putting a tap or valve on the DIY bottle. Kaboom!

Also cooling the water in the yeast bottle slows production. Want more production? put it on top of your light. when the light goes off, the yeast cools down, slowing production

if all else fails you can turn on an airstone at night, or for an hour during the day to blow off excess co2. Fish can take a lot of co2 (as far as I know around 100ppm) and I wouldn't worry about the pH. mine is around 6. the fish love it

hope this helps.

[Gnome]

no valves?
how about the check valves?
...I think I will have an airstone turned on after the lights off for an hour or two.
Thank you.

[Cackett]

what mix's do you guys use for Co2 how may part to how may parts

[Somonas]

1/2 tsp yeast, 2 cups sugar, 2 litres water, in a 2 litre bottle.