I love bloombastic it makes my weed super sticky chrystally dankness but maybe strain dependant it doesn't really up my yield but produces a superior end product. buy the small bottle and do a side by side. add 2 ml per gallon on week 3 and 3 ml on week 3 and 4ml on following weeks except last week for flush. ....it stinks it's expensive but trust me it's way better than kool bloom bro i promise. koolbloom will fry your plants as well as make many strains hermie. bloombastic helps them be resistant to the stress(thats what the bottle says) and have yet to fry my plants with this shit. If worse comes to worse you get a cool $90.00 aluminum bottle that it comes in lol. If you end up liking it and you want to order large bottles (5.5 liter) PM me and I will give the cheapest place I could find on line. I love this shit and will always drop the extra coin because I have tried at least 4 other bloomboosters and this one gives the bud awesome taste and chrystal structure unlike the others. I guarantee there is boosters that will out yield bloombastic but not in taste.....and yes I flush and grow soil,coco, and hydro and use bloombastic in each and done side by sides with koolbloom and monsterbloom (both work good and yielded a couple more grams but the bloombastic bud tasted awesome even without a cure) as for being organic it's 'almost' organic (whatever that means) good luck BB