Quick Answer

Late stage flowering finisher, NPK 0.6-3-2 with 0.5% Mg, aimed at flavour and finish rather than size or density.
Runs alongside PK Plus through the same weeks 1 to 6 window, dropping out entirely by week 7.
A different job to PK Plus, this is about carbohydrate use and ripening quality, not raw phosphorus and potassium load.
Suits hydroponic, coco and soil systems.
Sizes: 1L, 5L, 20L, with 200L and 1000L available for commercial orders.

Same high grade inputs as the more expensive imported brands, manufactured right here in Australia, without the import price tag.

Building flower mass and finishing it well are not the same job. Flower mass comes largely from the phosphorus and potassium PK Plus supplies, but the carbohydrate and metabolic processes that determine how well developed flowers actually ripen, how dense they finish and how much aroma and flavour compound they carry, run on a broader, lighter mineral profile. PCS Quality Enhancer supplies that profile, including magnesium alongside its NPK content, specifically for the finishing stretch of flower.

It runs across the same early to mid flower window as PK Plus but drops out two weeks earlier, after week 6 rather than week 7, and that earlier cutoff is deliberate. Finishing quality benefits from a cleaner final stretch of flower with fewer additive inputs competing for the plant's attention, rather than continuing to push carbohydrate and metabolic support right up until the flush. The practical result of following that shorter window rather than running it the same length as PK Plus is a more complete finish, denser flowers with better developed aroma, rather than flowers that are simply larger.

How to Use, Full Feed Guide

Week	1	2	3	4	5	6	7	8
Quality Enhancer	1ml	2ml	2ml	2ml	2ml	1ml	-	-

Add alongside Bloom A&B and PK Plus in the same reservoir. Stop after week 6, do not carry it into weeks 7 or 8 the way PK Plus continues into week 7.

Suitable For

Hydroponic, coco and soil systems.

Frequently Bought Together

PCS Bloom A&B, the base nutrient Quality Enhancer is layered on top of during flower.
PCS PK Plus, runs the same flowering window but targets flower mass rather than finish quality, a different job to Quality Enhancer despite the overlapping weeks.
Bluelab Combo Meter, worth confirming EC after mixing, since Quality Enhancer runs alongside two other additives in weeks 2 to 5.

Frequently Asked Questions

Is Quality Enhancer the same as PK Plus?

No. PK Plus is a concentrated phosphorus and potassium load for flower size and density. Quality Enhancer carries a lighter, broader mineral profile aimed at the carbohydrate and metabolic processes behind finish and flavour development, and the two run on different dosing curves despite overlapping across weeks 2 to 5.

Why does Quality Enhancer stop earlier than PK Plus?

Finishing quality benefits from a cleaner final stretch of flower with fewer competing inputs, so it drops out after week 6, two weeks before PK Plus tapers off, rather than continuing right up to the flush.