I've been using it througout my grow with great results. It seemed like my plants were stunted initially, measuring only about 2" after 2 weeks of growth. I started using it (1/4 tsp per gallon of water) and things took off almost immediately. You can check some pics in the link below. Hope this helps.

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I grow only tomatoes and for my personal use. Any inference otherwise from my posts is completely false.

Current grow: http://www.rollitup.org/grow-journal...rly-misty.html

My 1st grow: http://www.rollitup.org/newbie-centr...h-me-luck.html