B1 is an organic supplement I use as a preventative measure. B1 helps keeps roots healthy and that helps to keep plants healthy

TDS = Total dissolved solids the measurements of salts in water. This is how you measure the nutrients so you know how much you are feeding your plants. If you donā??t know then you should!

N = Nitrogen and refers to part of a nutrition requirement the plant requires for proper healthy growth.

It takes more then luck to grow happy, healthy, medical quality strains.
Zandor Reviewed by Zandor on . Hey Zandor........ How much Cal-mag do you add to supplement your hydro grow? Bottle says 5-10 ml. per gallon of reservoir. I've been adding a bit less than that in fear of over-nute. I have a few older leaves on only two plants that are a bit yellowing but with some necrotic spots and patches. It looks kinda like the pic and description of Mg deficiency or Potassium deficiency. PLants are only at three weeks veg so I don't want to overload them. WOuld Silica Blast (Potassium Silicate) help if it was an Rating: 5