Booster PK+: a supplement to the flowering programme

Booster PK+ is a phosphorus and potassium supplement for use during flowering. The kit contains it in two separate 125 g sachets. Its role relates to the base feeding programme, so plan its use alongside the Short Flowering dose and the nutrients present in the medium.

Every product added matters to the solution being applied. If you add CalMag and Booster to the water alongside Short Flowering, check the finished mix and record each dose separately. This keeps the solution's composition traceable and allows you to identify exactly what you changed in a later adjustment.

Choose when to start Booster and how much to use according to the relevant manufacturer's programme. Different plants may progress through flowering at different rates, so also check the actual development stage. The aim is a feeding plan in which the roles of the base feed and supplement are both clear.

Soil, coco and hydroponics: use suited to the medium

The manufacturer's Autoflower Starter Kit description lists lightmix and allmix media, coco, rockwool, hydroponic systems and outdoor growing as possible applications. These are different systems, so you need to use a dosing and watering approach suited to your chosen medium. Look beyond the medium's name to its composition and any nutrients already present.

With prefertilised soil, existing nutrients form part of your starting conditions. If you work with coco, rockwool or a hydroponic system, the manufacturer's instructions also emphasise measuring pH and EC and adjusting them as needed. Incorporate the kit's use into your system's measurement and watering routine.

Treat a change in water source as a significant change too. If, for example, you move to water with a different composition, recheck the starting values and the need for supplementation. Recording the recipe used previously helps compare the two situations, but you need to review the appropriate recommendation for the new water separately.

Preparing nutrient solution with accurate weighing

Prepare a clean mixing container, scales suitable for the doses you intend to weigh and the measuring equipment your system requires. Weigh doses given in grams by mass and prepare the intended water volume. A workflow you can track is particularly helpful when you apply several products on the same occasion.

List each component on a separate line in your mixing plan. This keeps it clear when only the base nutrient is required on one occasion and supplementation is needed on another. The following steps show how to organise preparation; the product label and manufacturer's instructions chosen for your own conditions provide the specific quantities.

1. Measure the water required and check its starting pH and EC. Also consider the water's composition when planning calcium supplementation.
2. Choose a programme suited to the plant's current development stage and growing medium. Review which other nutrients you used previously.
3. Calculate the doses needed for the water volume, then separately weigh the amounts of Short Flowering and the specified supplements.
4. Dissolve the required powders in the water, following the products' mixing instructions. Record each dose added so that the complete recipe can be traced.
5. Check the EC and pH of the prepared solution according to the manufacturer's instructions. After any adjustment needed, assess the solution again before application.
6. Record the date, water volume, products and measured values. Use the solution according to your chosen growing system.

Planning quantities and monitoring your plants

The total quantity of 875 g consists of three products with different purposes. Track the kit's consumption by component. You have 500 g of Short Flowering, 125 g of CalMag and a total of 250 g of Booster available; different doses and application frequencies may result in different rates of consumption for each product.

If you follow a dose per litre, calculate the required mass for the full water volume of the solution you plan to prepare. Do this separately for each product. The recorded mixing details can later show how much material you have used and which component you need to plan to replenish first.

Monitor the plants and growing conditions alongside the dosing log. If you notice a change, review recent waterings, measured values and any change in programme. It is difficult to choose an appropriate action from a single symptom; information gathered from several perspectives allows a more targeted decision or discussion with a professional.

Storage and clean equipment use

Reseal opened sachets after use and follow the storage conditions on their labels. Use a clean, dry tool for weighing and keep open powder packs away from the mixing water. The two Booster sachets can be handled separately, allowing you to open the second according to actual consumption.

Clean mixing containers and measuring equipment according to their instructions. If you prepare several solutions, mark the contents and preparation details on the containers. This particularly helps keep work organised and recipes clearly separated when growing plants at different development stages.

Safety during weighing and use

Before starting to use the kit, read the labels and safety data sheets for all three products. Choose the protective equipment needed for handling and the storage conditions based on these documents. Short Flowering, CalMag and Booster are separate products, so they may also have separate application and safety instructions.

Keep powders and solutions in clearly identifiable packaging and carry out weighing on an organised work surface. Follow the appropriate label and safety data sheet when dealing with spilled material or solution. Careful preparation is part of accurate dosing work too.

Frequently asked questions about the Autoflower Starter Kit

Are all three products needed at every watering?

Plan use according to the programme, water and medium. The base nutrient, CalMag and Booster have separate roles, so choose the individual doses and application occasions using the manufacturer's instructions for each.

Can CalMag be used alongside another calcium supplement?

In the CalMag information, the manufacturer specifies that it should not be mixed with other calcium supplements. When putting your programme together, review products already in use and also consider the calcium content of the water.

Can the number of plants the kit will cover be specified in advance?

Water volume, the doses used and growing time together determine consumption. As well as the number of plants, their size and your watering routine also matter. You can estimate use of the kit based on your own programme.

Package contents

• 500 g Green House Feeding Short Flowering
• 125 g Green House Feeding CalMag
• 2 × 125 g Green House Feeding Booster PK+