I do run lime, but apparently it's not enough for the FF.
I recently added some to the top of the soil and scratched it in (3tbs per 2 gallon pot).
I also added extra to my premixed soil.
But who runs the AN PH Perfect?
Here's the deal. In soil, plants absorb nutrients at certain ph ranges, some ph ranges are more optimal than others. I used ph perfect for a long time before I figured out my cal mag problem. I dumped cal mag in and got problems with salt build up.
What's happening is that the ph perfect system is designed for hydroponic reservoirs to maintain a ph sweet spot of 5.6-5.8. Now that is optimal for hydro, but things work differently in soil. My plants always showed mag deficiency so I'd dump mag in and the get calcium and nitrogen lockout. For soil the optimal range is 6.2-6.8. Really I say 6.5-6.8 because magnesium is locked out once the soil ph drops below 6.5. So the ph perfect is putting your soil at a ph of 5.6 and your plants are being locked out of magnesium and calcium which then decreases the uptake of nitrogen and photosynthesis. Their ph perfect line has tons of ph buffers that fight to keep ph in that range.
Advanced is an amazing company and claim ph perfect is for soil but it really is not. Yes after you hit flower things will look nice but that's because your medium has used all its nutes and is dead and has because a hydroponic medium like coco to absorb fast absorbing nutrients. I love advanced and am really hoping they come with a none ph perfect system again. I've went back to the old connoseuir none ph perfect and iguana and have had instant change in my veg and flower.
Check your soil ph. Blue lab sells a handheld soil pen that is badass. 6.5-6.8. You may have to keep it 6.8 till it jumps up to 6.5. Also remember it takes two days to see a change
...................... Big Mike - 
