with
FFOF. you would need to start feeding the ladies after a month or so. If your not using any additional ferts when flowering. So after a month, the plants would use up all available nutrients in the
FFOF inside the pot. You would need to supplement nutrients or repot your plants. Normally I try not to repot during flower but if your confident enough to than it would definitely help out. MG will work for you because its time release last a hell longer than one month.
FFOF will last one month feeding your plants than its up to you to supplement.
ph pen is extremely essential to growing cannabis. Mostly if you plan to consume it (smoke or edibles). If ph is a factor in your area (my local tap ph is 8.2) than you would need to use ph down (lime juice works).
My tap is 8.2 I am currently using
FFOF with great success, I supplement nutrients when I see the plants needs feeding. After that, it would be nutrient fed every third feeding, when I get about 5 weeks in I feed with nutrients every other watering. In between nutrient feeding I just water with plain ol dehumidifier water with ppm of 1. This help with salt build up and I find that I don't need to flush as long with this method. I use tap water when feeding the ladies nutrients as tap water contains all trace elements I would need, so cal mag won't be necessary.
got some pics?