Do you all use Cal Mag + in flowering only or do you use it in veg also? My plants are 6 weeks into flower and I might have a slight Cal Mag deficiency and I have been using Cal Mag since the 4th week of veg. I am using the lower dose. I have also had lots of trouble with algae on this grow. I might have let it go a little to far before I started using H2O2. Do you all use H2O2 for the entire grow or do just use it if you see algae? I have no light leaks and am using opaque buckets from Gen Hydro. I can mix up a new batch of nutes and clean resevoir and within a few days my airstones are starting to get covered with a sponge like material. This is my 8th grow using this same system. It is a Gen Hydro waterfarm. Any advise is appreciated. I use the Gen Hydro 3 part with Cal Mag +, liquid Koolbloom, Florablend, Floricious Plus and now H2O2. Even though I am having some problems the girls look good. I am growing AK-48 and LSD.