BudStorm is an All-in-One flowering additive for promoting floral blooms of optimum size and quality Contains phosphorus, potassium NPK 0-12-11 and organic flowering stimulants Improves the integrity of flowering sites pH “neutral” formulation For use in hydroponics, soil or coco Dose rate 1ml per Litre PK additives primarily contain phosphate “P” and potassium “K” These elements are essential during the flowering and fruiting phase. Although bloom nutrients contain phosphorus and potassium, heavy fruiting plants such as tomatoes and peppers have an especially high demand for these elements. Hence, PK additives are used in conjunction with bloom nutrients to help ensure no deficiencies occur. They are also a more economical alternative compared to using extra bloom nutrient.PK additives should generally be used from the onset of budding until flowers or fruit are fully formed.When choosing a PK additive choose a brand that is relatively pH 'neutral'. Many brands are quite ‘alkaline’ which causes a significant increase in nutrient solution pH. These can quickly destabilize the nutrient if pH is not adjusted immediately after dosing. Shipping Notice Please note our Free shipping policy does not apply to this item due to its size and delivery costs We do offer competitive shipping rates based on your location, which are automatically calculated at the checkout Some rural areas may incur additional rural delivery fees we will notify you before dispatch if this applies to your location