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Nectar for the Gods....Their Herculean Harvest is by far the best calcium on the market

I have heard of that one, seen it at the grow store. Sometimes it is overwhelming the selection to choose from.

Check out Monstergardens.com, they only carry what they believe is the best and customer requests plus they have many informative vids on yt. Boogie Brew is awesome too and he does yt vids too