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1/ Ph and EC from fertigation to run off is leveling out. Ph in at 6 and out. But the EC in the run off is lower than when it went in at 1.8 . What would she be eating that that would do this? Phosphorus. Phosphorus is very acidic and causes the ph to drop. Potassium really
2/ Doesn’t affect pH much nor does nitrate nitrogens. That’s why they will often use a combination of nitrate N with a little ammonium N to make the ph of it slightly acidic. So typically in veg the run off PH comes out more acidic than when it went in. When water is removed
3/From the solution it’s level of salts to water ratio lowers the PH or, concentrates the solution. Phosphorus plays a big roll in a lot of functions in plants such as photosynthesis and the utilization of carbohydrates. So as flowering is induced we turn the lights up and she
4/ Starts really munching the P while trying to get buds set and the extra photosynthesis from intense light. This is where a lot of folks see deficiencies in the transition, either due to a rise in ph out of the range or phosphorus deficiency or sometimes both. This
5/Always differs from setup to setup depending on the variables such as medium, water retention of the medium, different light intensities, etc. Now it’s not easy to OD a plant on phosphorus because it utilizes it for so much. Now pumping a plant full of phosphorus might score
6/ You some good looking buds, but in my experience it also kills a lot of flavor and excess P in the medium can cause a drop ph if it’s not used. Back to the original point, I’m not a big fan of boosters for long term use. At the point I’m at right now in the 3rd week
7/When she’s really pushing from transition, hardening and setting buds I’ll boost the PK. But just a enough to get my EC a little higher then when it’s going in. I like at least 300 more ppm or .6 EC in run off to make sure she’s getting all she needs at this crucial time but
8/ Not too much. Also ramping down the nitrogen which I started at the beginning of flower. After week 3 I will slowly start ramping down the EC of all feeding until week 7. Then I will use that week to ramp the EC down everyday until it’s almost plain water through week
9/ 8. Then week 9 actual full flush for most typical hybrids. This schedule varies at the end dependent on strain and when I think it’ll be done flowering. I don’t like completely starving plants on week 8. But only feeding p and k at about 200 ppm until a final flush week.
10/ this is why I pay so much attention to everything and love coco. You can almost perfect a plant in the first run and definitely by the second. I’m always searching for balance. You can’t force feed a plant no matter what, she’ll take what she wants dependent on environmental
11/ conditions, not because I put something in the feed and it’s available... My job is to give her what she wants and I want her to be happy 
