Well waking up to a tank pH of 4 having killed off a dozen nice Moscow blues (Rams and Cory's survived at least). New yeast was apparently a little more vigorous than the old...
I believe it's time to make changes.
Regulating flow from a yeast based co2 we know to be pretty problematic. Good way to paint the walls with must.
I'd really like to be able to use the wine carboys that generally are located right beside the aquarium to feed the co2 needs. I just know they produce way more than my 29g could ever need.
I was thinking lowtech with a simple needle valve, but I do have a 5v solenoid here for gas control that I'd grabbed in case I found a smoking deal on a pressurized co2 system - and most of the parts to build an Arduino controller.
I was thinking about it this morning, and hoping to tap some of the more knowledgeable brains around here.
What I'm contemplating is using the typical older style Brewers airlock as a pressure regulator & accumulator for lack of a better term.
The weight of the cap and water level would create a minimal amount of pressure. Take feed from either the lid or come up from the bottom to feed the co2 to the tank.
I'm guessing I'd want much more significant size than the typical wine making ones to allow volume to be available for the aquarium... excess as always just bubbles under and gets dispersed.
Think I'm barking up the right tree on this one or am I just setting up for failure?
I do have 3d printers, it's dialed in for water tight projects - so not a particularly challenging project.
Wondering if anyone else has some genius ideas to accomplish the same?
Thanks in advance,