Hey
@Fermented_Fruitz , yes I've used the blumat carrots a couple times.
Soak the ceramic part well, couple hours if it's first useage
Once you have them in hand it's easier to see. The underside of the screw on caps have some holes. Use a syringe to push water through them while keeping the cap submerged. You should be able to see bubbles exiting.
Keep the cap and carrot submerged when you screw them together.
Test and tune! Watch all the YouTube vids as well. Bleed the lines when you hook up the reservoir. Open the cap valves until it runs a bit. Try to close it at the point where a drop hangs at the end of the tubing and adjust from there.
Do water your soil first. That way the soil has hydrostatic pressure and won't pull until it gets dry.
Elevate your reservoir so there is some pressure from gravity. Keep it at least half filled.
That's all I can think of right now. Hope you like them.