I can't believe I've never stumbled upon Growtronix before!
I've been looking for this since I was 16. (alot older now)
Thank you for the post.
I've been trying to get my smarter friends to mickey mouse something like this together for years.
The closest I got was power switches. (no brains)
It's pricey, but exactly what I want.
A few questions about the software:
How is the logic?
Can I say set a target PH for my res, an acceptable variance, and have 2 dosing pumps manage the PHup PHdown?
Automate Feed, Water Change, set PPM and let dosing pump manage?
Logic for CO2/Exhaust Managment/efficiency?
Is there any historical data?
Save Completed Grow history for Archive?
What kind of DB?
Web GUI. (lol how about my iPhone!)
Now you got me going.
I won't be able to sleep tonight!