White foam in feeder tank

[Monkeybigbuds]

Rdwc
Ph 5.8
Ppm 850
Rt 77 day 69 night
Wt 20c 21c
Lt 72
General hydro 3 part feed
Is this white foam normal ?

 

[DougV]

Never used it. You could look on the label to see if there is a surfactant in the ingredients.