Product description
Matrix Bloom 5 L – bulk PK additive for finishing whole grow rooms
When a whole room goes into its final four weeks at once, small bottles run out fast. The 5 L container is sized for that, and it has the lowest price per litre of the three sizes.
What's in it
Matrix Bloom from Fenix MTX (Germany) is a PK additive for the last 4 weeks of flower. German retailers list it as PK 18/23 (18.46% phosphorus, 23.40% potassium), a stronger mix than a classic PK 13/14. According to the manufacturer it helps flowers and fruits harden and fill out, and firmer cell walls let fruits hold water and keep longer.
Scale: up to 10,000 L
Retailers give a dose of 5–10 ml per 10 L of water (0.5–1 ml/L); Fenix MTX itself refers to its feeding schedule. The 5 L container covers roughly 5,000 to 10,000 L of nutrient solution. For a 300 L tank that's 150–300 ml per fill.
Dosing pump and storage
With tanks this big, a dosing pump or a dedicated measuring jug keeps the PK level identical from batch to batch. Shake the container before drawing from it and decant a litre for daily use so the bulk stays sealed. Check EC after every mix: a high-PK additive pushes it up quickly. Store dark and frost-free between runs.
