I purchased the Green house feeding powder Grow, short flowering and Booster. I have arthritis in my hands and can no longer handle bottles of liquid feed, so it was time to give up growing or change to powders. I, therefore, started out with no expectation of a bumper crop but in hope of enough to meet my needs. The seedling stage and vegging with the Grow powder was a little slower than the liquids I had used but produced strong green healthy plants. I followed the Green House Grow chart and used an EC and PH meter. The powder is easy to handle and takes up very little storage space (liquids feeds are mostly water). The short flowering and booster powders are surpassing my expectations, 3 weeks into flowering and there are lots of really nice flower sights forming, as big as i’ve ever had at this stage. The feeding chart for flowering is a little low to hit the best EC but this could be down to my water supply having little, if any, agricultural or industrial run off. Anyway, the cost is much lower so a few extra grams aren’t an issue. Overall, this is much easier than mixing multiple liquid feeds and because it’s simpler, less chance of mistakes. The results have amazed me so far, I’m very happy with this feed, I wish i’d used it earlier.