You know how to adjust the Prescription Blend from that @Krissi Carbone review but if I could make a suggestion it’s to do it in small quantities and wait for the plant to tell you how much. CLHi @KeithLemon - may I make a suggestion? You mentioned the yellowing bottom leaves on the one plant, I see them. They are often perfectly natural and no big deal at all, and as you note could easily just be from the rain/extra water. That would be my guess too. Just keep an eye on them and in the greenness of the plant in general. It may just be the light in the picture, not sure, but it appears that compared to the other ones she *might* be looking a bit lighter? Is that the case? That girl may be a hog for one nutrient or another, in the case of green it’s often Nitrogen. This is why I suggest keeping a close eye. If they get lighter than they are now (I highly doubt this will happen, but it could) you may want to consider boosting the N in the Prescription Blend mix (this is as easy as adding a bit of the Cores). Just something to be aware of, not at all trying to worry you. For what it’s worth!