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- #781
Skybound
Well-Known Member
you no the other day I didn't really answer you about the lithothamnium the reason im adding it is because the soil im using roots 707 is light in the cal mag area so every grow I have those problems these lights suck it out of the plants im hoping adding this to the soil will end that problem I added an lb. to 6 cu. ft. of soil and its supposed to be good for several grows im tired of buying so much soil im going to try amending and reusing for at least one more grow ok that's enough bs from me lol!
If you still get problems, consider shaving off K and Mg from the original amendment recipe. Those are calcium's biggest antagonists. Lots of P can also be problematic, but in that case the soil microbes can later rescue both the Ca and P.