Very big help bro. now that you mention it, i did notice my ph tester jumpin all over the place a day after i tested the r/o water. now it makes sense.

I have not got the cal mag yet. pretty much doing my research before i go buying this stuff.

I thank you very much for the great info.

Happy growing
J
jbrand Reviewed by jbrand on . r/o watering I have a five stage r/o system that i would like to use for watering my babies. I have read and understand about using CalMag plus in the r/o water, but does cal mag adjust the ph? my r/o water ph tested with an oakton tester came up to 9. will i still have to use a ph up and down to adjust. I am using fax farm trio and have noticed that by adding the ff it lowers the ph to around 7.7 but of course that is still to high FYI i am using ff ocean forest soil. Rating: 5