This stuff is good. There are alot of products out there which claim a lot of things but this actually delivers in a big way. Use from the start of week four of the flowering cycle and it replaces enzymes, bloom stims and pk products and does the job by itself. No gaurantees but if you get it right then this stuff will amaze you. Don't usually do high praise but what can we say!! Suitable for all hydro growing mediums and soil.