Wow what a game changer. Learn about BluMats through BuildASoil and have not turned back.
Before using BluMats, I was using Ecowitt WittFlows through a gravity feed system. Something I do not recommend (the WittFlow units are not sensitive enough for gravity feed).
Ordered a 9in watering kit (with drip tape) and simply crushed it compared to the old system. There is a bit of a learning curve and prepare to flood your tent at least once (or twice), but have already completely switched over to the BluMat watering system.
Did have to learn a new unit of measurement, but pretty simple to understand. Unlike the Ecowitt units which used moisture percentage (0-100%), BluMats run on moisture tension (mBars). The handy moisture meter has a sensitivity of 0-750 mBar which is great to use when calibrating the watering carrots (one for each pot is highly recommend).
But once setup and properly calibrated, the system just works perfectly. The water turns ON and OFF based on the set moisture setting and each pot can be fine-tuned independently.
Furthermore, once you understand the physics involved in a gravity loop (and how the size of the reservoir does not affect PSI), the clever modular design makes expanding the system quite simple. Personally recommend using a small 1-gallon (auto-filling) reservoir placed on-top of the tent (which produces a steady 2-3 psi at my altitude).
The best part is the system automatically waters without the need for batteries or electronics. Incredible.
As a novice grower, another unintended positive is the BluMat system will teach you how to water better. After using the system the first time, learned that in general, I was under-watering my plants. This alone was a huge game changer for someone who has never grown anything before.
If your an organic soil grower who wants to take your waterings to the next level, I highly recommend giving the BluMat watering carrots a try.