Pump sprayer from Walmart - $5 Tubing and T adapter from local hydro shop - $3 Disconnect wand from pump sprayer handle, shove tubing in it. Create watering circle using the T adapter, and attach to tubing leading to pump sprayer. Poke/Drill holes in the watering ring. Easy, effective, cheap. Precise, soft, even, non intrusive watering.
I use the ring pictured (more of a triangle) for 1 gallon pots. For bigger pots just make a larger ring, or a smaller ring for smaller pots. For pots over 5 gallons, a larger pump sprayer would be best, or a resivour and pump. Otherwise it would likely take more than a gallon per plant, and you'd have to refill the tank mid watering.
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Nice set up bro! Jealous as fuck. Lolol. I'm doing what I can do now. Atleast My par coverage is amazing w a p300 platinum in a 2x2 s svrog keep up good work dude!
Love the simplicity. I assume you're in coco? No air in the res isn't a factor then, since coco can supply it abundantly just by top feeding?