Professors Nutrients Extreme Boost (Powder PK Booster - 250g / 500g)

What is Professor’s Nutrients Extreme Boost and what does it do?

Professor’s Nutrients Extreme Boost is a highly concentrated powdered PK (phosphorus and potassium) booster designed for the final bulking and ripening stage of flowering and fruiting plants. It supports heavier flowers, denser structure, and a stronger finish when plants have their highest PK demand late in bloom.

When should I use Professor’s Nutrients Extreme Boost?

Extreme Boost is best used in the final 2–3 weeks before harvest. It’s a late-stage finisher, not an early bloom product. Using it too early often leads to nutrient imbalance rather than better results. It’s not intended for seedlings, veg plants, or early flowering.

How long should I run Professor’s Nutrients Extreme Boost?

Most growers run it only during the final 2–3 weeks of flowering or fruiting. The goal is a controlled finishing push, not continuous heavy feeding. Running it longer than needed increases the risk of salt buildup and nutrient stress without added benefit.

What results can I expect from Professor’s Nutrients Extreme Boost?

When timed correctly and used on healthy plants, Extreme Boost can improve flower density, final weight, and overall finish quality. Some growers also associate it with stronger resin production and improved ripening. Results depend heavily on genetics, environment, lighting, and balanced base nutrition.

What is the correct dosage for Professor’s Nutrients Extreme Boost?

A common rate is 2 grams per 4 litres of nutrient solution. Because it’s very concentrated, accurate measuring matters. Start at the recommended dose or slightly under, especially if your base feed is already strong.

How do I mix Professor’s Nutrients Extreme Boost properly?

Pre-dissolve the powder in a small amount of warm water before adding it to your nutrient solution. This helps it dissolve evenly and reduces the risk of undissolved particles that can cause uneven feeding or clog irrigation lines.

Can I use Professor’s Nutrients Extreme Boost in soil, coco, and hydro?

Yes. Extreme Boost can be used in soil, coco, and hydroponic systems, including recirculating reservoirs. Coco and hydro growers should be especially mindful of EC, as it’s easy to push nutrient strength too high late in bloom.

Does Professor’s Nutrients Extreme Boost raise EC or affect pH?

Yes, it raises EC quickly because it’s highly concentrated. Many growers slightly reduce base bloom nutrients to compensate. Always mix everything first, then adjust pH at the end, keeping it within the normal target range for your growing medium.

Can Professor’s Nutrients Extreme Boost burn plants or cause lockout?

Yes, if overused. Common signs include fast-ramping tip burn, dark stressed leaves, stalled uptake, and rising runoff EC. Excess salts from heavy PK feeding can contribute to nutrient lockout, especially in coco and hydro systems.

Can I stack Professor’s Nutrients Extreme Boost with other bloom boosters?

You can, but it’s rarely necessary and often causes overfeeding. Extreme Boost is already a strong PK finisher. Stacking it with other PK boosters or heavy late-bloom additives usually increases stress rather than improving results.

Should I use Professor’s Nutrients Extreme Boost right up until harvest?

Some growers do, but many ease off earlier depending on their finishing and flush approach. Heavy late feeding can negatively affect flavour and burn quality. A cleaner finish usually means reducing salts toward the end rather than pushing harder.

Is Professor’s Nutrients Extreme Boost good value and how should I store it?

Because it’s a concentrated powder, a small amount goes a long way, making it good value compared to liquid boosters. Store it sealed, dry, and away from humidity. Moisture causes clumping and makes accurate dissolving harder.