Bubble/Spray stakes

Im in the process of setting my room and have decided to use adjustable spray/bubble stakes. They have numbers from 1-10 I beleive and there are 20 emitters for 20 plants with w 550 gph pump @ the res. My question is has anyone used these and where would be a good number to start at. im looking to set my cylcle timer to only deliver around 250ml at a time. Any input is greatly apreciated.

Bump. Nobody uses these?

I use Shrubbler heads on steaks which are exactly like that. The only thing is it takes a lot of pressure for these to work at full capacity. I use a 396gph for 10 and they work great. compared to emitters i noticed rapid root growth since the head breaks the water, it aerates the solution.

How long does your pump run?

I run my pump 2-3 times a day for 1-2 minutes. Im growin' in rockwool slabs so water retention is good. A good filter after the pump is necessary to keep your stakes form gettin' clogged.