I quit using tiger bloom a long time ago. And I get through all of my grows just fine (both indoors and outdoors). Granted, they do have a decent amount of organic soil to work with (indoors 10-18 gallon outdoors 160'ish gallon) in the beginning, but I grow some pretty decent sized plants and just use the Big Bloom with some silica and honey to get through flowering with great results.
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I also have the honey in the mix for the microbes and it has always served me well.
I'm on board with the BigBloom.
Although I will agree that it can be used like a bloom booster in large living soil beds.
I should also note that I don't use their grow big anymore either.