spray hight in cloner

I just built my first cloning machine but I don't think the spray is high enough to reach the stems. How close to the stems should the spray be? I haven't glued anything together yet and I can just make the legs longer so it's not a big deal but I would like a better idea of how high it should be?

Thanks

my commercial unit comes spraying out if I lift any foam circle, so I think they designed it to hit directly on the cuts. So much for your hormone, which they said you didn't need. If there's air and water it'll happen. Oh and temp too, I put a controlled heating pad under the reservoir set at 72.

Put the lid on it and a netpot in it and see if the netpot gets wet. If so, then fine. If not then raise it.