Some guy with a light
Here are a couple I had around for reference..
THanks for this chart! So, (in your opinion) does this translate in to water ph when using Pro Mix as a medium - I know it has dolomitic lime to balance. I just got a meter (was using vials) so I can test the runoff but the problem is I just transplanted from 2gallon bags to 18 gallon tubs so I wont have any significant runoff for a minute (just watered around the edges with 6.5 to get the roots shooting out.)I check it before, after, and all the time...one of the most critical factors in hydro, so don't get lazy...
That's really useful cheers, I was led to believe you adjust the ph of your water before adding the nutes I take it this is wrong?