Quote Originally Posted by polishpollack
A pH of 4.8 is much to low for a soil grow. That tells us something. Too much fert. Even using the ferts you have without using the additional P ferts, I suspect might be too much. I didn't think it was overfert initially because usually overfert shows leaf tips turning yellow, then brown, then the rest of the leaf turns yellow and brown. You have those colors, but you also have areas that stayed green. This was a good one, however, because people can learn from this. I wonder if you water with some pH up, if that might make a difference.
Ok - the consensus is too much fert. I concur. The plants I have in Veg now are on a new schedule. They are at the end of Week 5 & have received a 30% reduction in the FF schedule & only fed 3 x's. They look gorgeous. The Jack Flash are over 2 feet & the White Widow are over 30 inches. They have been growing in the Ocean Forest soil. Now that they are going into Flower, I will follow the FF schedule cut by 30% (1/3rd approx). The schedule calls for feeding every other watering.

Question: SHOULD I ADD CALMAG with each feeding in addition to the FF?

As for the pH, with nutes, I'm at 6.4. Are you suggesting I go higher? I have a bunch of plants so we can have some fun with experimenting.