Question about my GHL 2.1

[Jakepen]

I'm trying to calibrate the pumps, and pump 1 and pump 2 differ by 6ml per minute. At the fastest speed, pump one has a flow rate of 32ml per minute, while pump two has a rate of 38ml per minute. Is that normal?

 

[nex64]

You can edit the flow rate manually via the app . Have you done that?

 

[enthejungle]

I'm pretty sure that's normal. When I calibrated at "fast" I was at 32 and 35.8 onthe two heads that I've calibrated so far. Granted it's not as big as your difference but a difference is normal IMO.

 

[Jakepen]

You can edit the flow rate manually via the app . Have you done that?

Oh hey sorry, I didn't see this. When you say edit, do you mean slow med and fast?

 

[reefwiser]

Slow speed is the most accurate speed for dosing. I would only use the fast speed for ATO use only. GHL recommends using the slow speed to calibrate the pump.

 

[fragit]

The lengthen and diameter of the tubes your using will effect the rate also.

 

[Jakepen]

Slow speed is the most accurate speed for dosing. I would only use the fast speed for ATO use only. GHL recommends using the slow speed to calibrate the pump.

Oh, well dang. I already have it dosing at the fast speed, getting it pretty dialed in to. Would you change it up and go to the slowest speed?