Quote Originally Posted by ddxsinxcosxdx
So, at the end of flowering, when the ppm ranges increase, I just add the appropriate amount of PBPB?

PH I check every week or so, water comes in about 7-7.2 and run off is 6.4-6.6. I just use dipsticks which I hate, I need to get a PH meter that has a digital read out, I always worry that I'm not reading the test strips right.
Not sure if I understand your question completely.... But the time that you want to switch from PBPG to the PBPB is within the first two weeks of flower.... So if you were using 5ml of PBPG on the last week of veg, give them 5ml of PBPB when switching over, after a ppm reading adjust to suit.... Then raise from there to get the desired ppm....

Well at least you have some way of checking pH....cool....

CGI::::::