That’s cool but I only have one tank and only need 2GPH to do a 67% water change a week. I can achieve this using one drip emitter. Are you doing multiple tanks?This is what I got right here. Like I said local grow shop but online it's even cheaper..... I'll have to find my receipt it mat have been closer to $10. Anyway
https://www.dripworks.com/media/cat...525d08d6e5fb8d27136e95/o/c/octabubbler1_1.jpg