My diy halos keep getting plugged or partially plugged. I may well go to pressure regulated emitters instead, especially for solos. I have run into reviews by peeps complaining about halos plugging too, so it is not just my diy setup, and it is not the nutes, I am on Jack's 321 only, and it is pure liquid, well filtered before it hits the 'drobe. It is possible that the problem is siphoning of particles of media when the pump turns off. Stuff inevitably splashes onto the bottom of the halos, and when the water turns off and the excess drains back into the reservoir, any bits hanging near a hole could get sucked in. Some emitters actually have valves that prevent siphoning for this reason. I am also looking at the floraflex caps for distributing the nute mix - the jury is out, but at this point, I do not recommend halos, I think a system using good emitters may be more reliable. Just my 2 cents worth based on a couple grows.