Coco tends to retain mineral salts, so you might need an extra flush or two during the plant's lifetime.

I use Fox Farms nutes, and follow their weekly schedule pretty closely. But living in the desert, it get's pretty hot which adds to the stress of giving full strength nutes. To compensate, I cut the dilution in half, but feed twice weekly. Same weekly totals overall with less stress to the plants. Plain, properly ph'd water in between if necessary. I use phDown (phosphoric acid) to adjust my 8.0 wellwater down to 6.8ish. My half-strength nutes bring it down to 6.3ish.

If you have to dick with soil ph to compensate for water ph, something is going wrong. If you are adjusting water with ammendment solutions to bring the ph into line, something will likely go wrong like excessive vitamins or excessive hormones/nitrogen (root stim)

What are you using to check ph, and when was it last calibrated? Could it be a simple mis-reading?
Rusty Trichome Reviewed by Rusty Trichome on . Soil to Soilless, anything I should know? Gonna put my newest babes in a new soilless mix of 8qts+8qts+2 bricks; P'lite/V"lite/CocoGro. Looks like a good mix, hell, if I were a weed plant i'd let my root grow in it. Runoff tested -1qt [email protected]/1cup mix; poured 50% straight through then 25%, 25%, RO was 6.7, 6.5, 6.5: it drains really well so i'm looking forward to an easy fall-winter grow. The four babies are 25 day old Matanuska Tundra, the two are clones from a seed of a MT/Blueberry Kush. Had a BC clone go hermi and ferted my MT. Rating: 5