Aptus Finaleboost, 5 L

Concentrate Potassium in the Final Weeks Without Sacrificing Other Elements, 5 L

The final weeks of flowering are when potassium demand peaks. Standard bloom products try to deliver both phosphorus and potassium at elevated levels simultaneously, but high potassium directly blocks nitrogen, calcium, and magnesium uptake at exactly the moment the plant needs those nutrients to finish strong. Finaleboost concentrates potassium in a single, isolated product covering weeks 5 through 8, removing phosphorus from the equation entirely.

Finaleboost ships in a 5 L container, sized for multi-room growers running the weeks 5-8 ripening schedule.

Key Features & Benefits

• Isolated plant-available potassium — delivers a concentrated K load for the ripening phase without the phosphorus that causes mineral antagonism in standard bloom products.
• Nitrogen, calcium, and magnesium preservation — removing phosphorus from the late-bloom equation keeps uptake of these three nutrients intact through the final weeks.
• Weeks 5-8 timeline — applied through the end-ripening phase at escalating doses, starting at 6 ml per 5 gal in week 5 and increasing to 20 ml per 5 gal by week 8.
• Bridges the Peakboost transition — runs alongside Peakboost from weeks 5 to 6, then solo from weeks 7 to 8 after Peakboost is discontinued.
• Isolated-element application — keeps phosphorus and potassium from being delivered together at high levels, since each element runs in its own product.

Who Should Use Aptus Finaleboost

Growers driving the final-push ripening phase who want elevated potassium without the phosphorus antagonism that blocks nitrogen, calcium, and magnesium, allowing the plant to finish strong on all fronts, with the 5 L size matched to garden scale.

About Aptus Finaleboost

Aptus Plant Tech began developing soil- and plant-science-based nutrient research in the Netherlands in the 1990s and has grown into a hydroponic nutrient supplier distributing across Europe, North America, and Australia. Finaleboost begins at 6 ml per 5 gallons during week 5 alongside Peakboost; Peakboost is dropped at the end of week 6, and Finaleboost runs solo from week 7 through week 8, increasing toward 20 ml per 5 gallons by the final week.

Frequently Asked Questions

When do I stop using Peakboost and run Finaleboost alone?

Start Finaleboost in week 5 alongside Peakboost, then drop Peakboost at the end of week 6 and run Finaleboost solo from week 7 through week 8, increasing the dose each week. This staged handoff keeps the transition between the P-peak and K-ripening phases smooth.

How does Finaleboost differ from standard P-K bloom boosters?

Finaleboost isolates potassium into a single product, removing the phosphorus that would antagonize nitrogen, calcium, and magnesium uptake in the final weeks. Standard P-K products force both elements in together and don't allow for that separation.

What dosage range does Finaleboost use?

Start at 6 ml per 5 gallons in week 5 and increase each week, reaching up to 20 ml per 5 gallons in week 8. The gradual escalation matches increasing potassium demand through the ripening phase.

Why does isolated potassium in Finaleboost protect nitrogen, calcium, and magnesium?

High phosphorus blocks nitrogen, calcium, and magnesium uptake through ionic competition. By removing phosphorus from the week 7-8 feed, Finaleboost allows the plant to take up all three nutrients at full capacity during the final ripening push.