Hello Skybound,
I’ve been looking again to your schematics and maybe it’s time to start thinking about developing my own dosing system. I have to realize how the water is flowing, maybe the system can be much more simpler, because the water do not need to be dosed permanently. Let’s think about steps:
- Put a new water in tank 2.
- Insert pH+ or - for set desired pH, spin the water enough to stabilize.
- Insert nutritients according to user settings, spin the water enough to stabilize.
- Measure pH and aditionally set + or - again, spin the water enough to stabilize.
- Pump nutrified and pH stabilized water into tank 1, from where plants are watered. Flush tank 2 a bit clean water into waste.
- When there’s not enough water in tank 1, flush the rest into waste, flush with clean water a bit, repeat from step 1.
Is it OK?
And if You want, You can see my project Growduino V2 - it’s finished and can be manufactured!