Quick Answer PROFESSORS FLOWER BOOST is a concentrated liquid phosphorus-and-potassium enhancer for the early and middle flowering stages. Its guaranteed analysis is 10% available phosphoric acid and 8.7% soluble potash. Use 2mL/L in hydroponic nutrient solution or 1.5mL/L in soil, then replace it with Extreme Boost for the final three weeks of flowering. Product Description Professor's Nutrients Flower Boost is a liquid PK supplement designed for fruiting and flowering plants. It adds phosphorus and potassium to an established nutrient program during the earlier part of bloom, when plants are forming flowers and fruiting sites. The manufacturer lists Flower Boost for hydroponic, coco and soil growing. It is a supplement rather than a complete base nutrient, so use it with an appropriate feeding program and monitor the complete nutrient solution. Flower Boost should not be used as the late-flowering finisher. Professor's Nutrients directs growers to replace it with Extreme Boost for the final three weeks. Key Features Concentrated liquid PK enhancer for fruiting and flowering plants. Guaranteed analysis: 10% available phosphoric acid. Guaranteed analysis: 8.7% soluble potash (K2O). Manufacturer-listed for hydroponic, coco and soil programs. Separate application rates for hydroponics and soil. Designed to be replaced with Extreme Boost for the final three weeks. Available from TG Hydroponics in four live Shopify variants. Available Sizes and Variants Shopify variant Format 1L Liquid PK enhancer 5L Liquid PK enhancer 10L Liquid PK enhancer 20L Liquid PK enhancer Specifications Brand Professor's Nutrients Product Flower Boost Product type Liquid PK flowering supplement Guaranteed analysis 10% available phosphoric acid; 8.7% soluble potash (K2O) Hydroponic rate 2mL per litre of nutrient solution Soil rate 1.5mL per litre of nutrient solution Suitable systems Hydroponics, coco and soil, as directed by the manufacturer Final flowering stage Replace with Extreme Boost for the final three weeks Package Contents 1 × PROFESSORS FLOWER BOOST container in the selected 1L, 5L, 10L or 20L size. Base nutrients, measuring equipment and Extreme Boost are not listed as included. Directions for Use Prepare the nutrient solution and base nutrients for the crop and growing system. For hydroponics or coco, add Flower Boost at 2mL per litre of nutrient solution. For soil, add Flower Boost at 1.5mL per litre of nutrient solution. Mix thoroughly and monitor the complete nutrient solution for the crop and water source. Stop Flower Boost and replace it with Extreme Boost for the final three weeks of flowering. Important: Measure accurately. Do not mix concentrated nutrient products together before dilution, and follow the current product label and feeding program. Care, Storage and Safety Keep the container securely closed when not in use. Store securely away from children and animals. Avoid ingestion and unnecessary skin or eye contact. Clean measuring equipment after use and wash hands after handling. Follow the current label and manufacturer guidance if they differ from general information on this page. Buyer FAQs What is PROFESSORS FLOWER BOOST? It is a concentrated liquid phosphorus-and-potassium supplement for fruiting and flowering plants. What is the guaranteed analysis? The manufacturer lists 10% available phosphoric acid and 8.7% soluble potash (K2O). Is Flower Boost a complete base nutrient? No. It is a PK supplement intended to be used with an appropriate base nutrient program. How much should I use in hydroponics? Use 2mL per litre of nutrient solution according to the official application directions. How much should I use in soil? Use 1.5mL per litre of nutrient solution according to the official application directions. Can Flower Boost be used in coco? Yes. Professor's Nutrients lists it as compatible with hydroponic and coco systems. When should I stop using Flower Boost? Replace Flower Boost with Extreme Boost for the final three weeks of flowering. Can Flower Boost and Extreme Boost be used at the same stage? The official direction is to replace Flower Boost with Extreme Boost for the final three weeks, rather than treating them as the same-stage product. Which sizes are live on TG Hydroponics? The live Shopify variants are 1L, 5L, 10L and 20L. Does the package include measuring equipment? No measuring device is listed as included. Use suitable separate measuring equipment for accurate dosing.
