Are there things you should not be using with the FloraFlex Nutrient line such as calcium or other additives?

V1 and B1 contain Calcium. Additional Calcium is not needed. We recommend keeping it super simple with our line, only adding a Silica if you prefer. The more stuff you start to add the more you have to play with the ratios of our nutrients to adjust for the NPK levels of the additives.
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