Ok. I am not too good with this whole nutrient/supplement/ppm thing.

I decided today to change the nutes because it was about 10 days old, and the ph was creeping up on me, and the color was murky and funky looking. I raised the PPM to about 1150 because my last boost to 800 ppm really improved the plants quickly, and I have read that vegetative ppm should/can be around 1200-1400. Now I know I'm only 15 days from seed, but they look pretty substantial up close with tight nodes and thick stems, and I would call this a vegetative stage. SO.....I changed the resevoir with fresh RO water, fresh nutes (ionic), half strength Hygrozone, and half-strength Floraliscious Grow. Now.....this Floraliscious stuff is DARK BLACK and even a capfull darkens the nutrient/water mix DRAMATICALY. It contains all that great supplemental/ hormonal stuff to boost yield/quality etc. The Hygrozone supposedly helps roots develop and all kinds of good stuff. But the combination of the three things, (Ionic nutes, Hygrozone, and Floraliscious Grow) may be a good for growth, but it is hell on your resevoir color, and ph level. I couldn't believe tonight when I checked the nutrient level and quality IT LOOKED WORSE THAN BEFORE I CHANGED IT 12 HOURS AGO (murky, dark, funky)!!! I think those supplements are wreaking havoc, but I have to say the plants look very good and have improved steadily, especially with the recent nutrient boosts over the last few days. I think possibly that the supplements should not have been added as early as they were into the mix. I'm not sure why the resevoir got so dark so quick.