This spray nozzle is the more aeroponic way of irrigation for the vertical barrels. The nozzles are very robust and self-cleaning also to small particles. They need protection from bigger solids using a standard mesh filter normally being part of the pump anyway.
This high performance spray nozzle provides a 1/2″ spigot to connect your pressure line. Flow rate is 1.1-1.8 liters/minute at 2-3 bar pressure.
The hexagonal head of this model fits into the 25mm mounting hole on our sprinkler dome lid. The most pragmatic mounting mechanism would be to drill 4 holes and use 2 zip ties to strap the nozzle on the lid.