I am excited to share that my grobo arrived today (unfortunately it was damaged in shipping) and I have planted my first seed.
I used RO water with Hydroguard. I PH the water to 6 before filling, however I noticed that its already using up some acid and not any base. I PH my water again and its down to 5.6. Any idea why the grobo is dropping my PH so low?
Should I have calibrated the probes in the grobo before starting up?
Any advice is appreciated, thank you.