Product description
Aptus P-Boost 1 L – organic phosphorus booster for every flowering cycle
Using P-Boost in every run from budding to week six? The litre bottle saves you from buying small bottles over and over, and the price per litre drops compared with 500 ml.
What's inside
Aptus P-Boost is a highly concentrated, organo-mineral phosphorus booster with organic phosphorus and organic nitrogen, chelated with L-amino acids for high bioavailability. It supports flower formation and development in the first weeks of flower. Its organic acids lower the pH of your nutrient water, so it doubles as a mild pH down, and it's 100% water-soluble with no residue in your lines.
Yield of 1 L
Aptus recommends 3–5 ml per 10 L of water from the start of budding until week 6 of flower; experienced growers raise the dose step by step. One litre covers roughly 2,000 to 3,300 L of water. A 50 L reservoir takes 15–25 ml per fill.
Working with a reservoir
Add P-Boost to the tank, stir, and only then read the pH: its organic acids pull the pH down, so you often need less pH down. Combining it with Aptus CaMg-Boost? Mix one product in fully before adding the other, then check pH and EC at the end. Close the bottle after each use and store it dark and frost-free.


