Flowering Boosters
A collection page of The Hydro Bros
About
Flowering boosters are what you add on top of a base feed once the plant switches from growing to producing. They shift the balance away from nitrogen and toward phosphorus and potassium, which is what flower and fruit development actually consumes. What a bloom booster does A base nutrient is built to keep a plant alive through every stage. A booster is built for one job in one window. Most fall into three groups: PK boosters – concentrated phosphorus and potassium, used in the middle of flower when demand peaks. The classic is a PK 13/14 style additive. Bloom stimulants – amino acids, vitamins and plant hormones that push flower initiation early in the 12/12 window rather than feeding bulk. Finishers and hardeners – used in the last two weeks to tighten and ripen. See finishers and flower enhancers . When to use them Stage What to add Week 1-2 of flower Bloom stimulant, if anything. Base feed does most of the work. Week 3-5 PK booster. This is where the demand is. Week 6-7 Taper the PK. Finisher or hardener if you use one. Final week Plain water or a flush, depending on your medium. The mistake almost everyone makes Overdoing it. A booster is concentrated, and stacking three of them on top of a full-strength base feed pushes EC past what the plant can take up – you get nutrient lockout and leaf burn, which looks like a deficiency and gets treated with more feed. Add one booster at a time, watch your EC, and change one thing per cycle so you know what did what. Keep an EC and pH meter on the reservoir rather than guessing. What we stock PK boosters and bloom additives from Shogun, Canna, Athena, Buddhas Tree, Advanced Nutrients, Mills, Dutch Pro, House & Garden and Plant Magic. Pair with a base nutrient , and if you are running organic see organic plant nutrients . For the veg side of the cycle, root stimulators are the equivalent. Flowering booster FAQs Do I need a PK booster at all? No. A good base nutrient run at the right strength will finish a crop. A boos