Advanced Nutrients Flawless Finish - Pre-Harvest Flush for Cleaner Tasting Buds
Best for: growers who want to strip out leftover salts and nutrient build-up before harvest for a cleaner, better-tasting finish.
Our thoughts
Flushing gets skipped more often than it should, usually because growers assume plain water alone does the job. Flawless Finish is built specifically to help pull residual salts and nutrients out of the plant and medium in the final week, which plain water alone doesn't do as thoroughly. It's a short, cheap step right at the end of the grow that can make a real difference to how the finished product tastes and smokes.
Flawless Finish is a flushing formula used for roughly the last week before harvest. It's designed to help strip residual salts and built-up nutrients out of the plant and growing medium, encouraging the plant to use up whatever it's got stored internally rather than leaving it locked in the tissue at harvest.
The process differs slightly depending on your system. In hydroponics, you drain the reservoir, refill with Flawless Finish mixed at 2ml per litre, run the system for around 6 hours to wash through the root zone, then drain and refill with plain water for the remainder of the flush. In soil, you thoroughly soak the medium with the same 2ml per litre mix, wait around 6 hours, then flush through with plenty of fresh water and feed only plain water until harvest.
How it compares
Flush products are a fairly standardised category, and Flawless Finish sits alongside the other well-known names.
- Compared with GHE Final Flush, which works on a similar principle of stripping residual nutrients before harvest, Flawless Finish uses a comparable dosing approach at 2ml per litre.
- Compared with House & Garden's flushing products, it's used over a similar short pre-harvest window rather than throughout the grow.
- Compared with skipping a dedicated flush product and just feeding plain water, a proper flushing agent tends to clear residual salts more thoroughly in the same time frame.
It's a small, inexpensive step relative to the rest of a grow's cost, and one of the few additives that's genuinely "use once, near the end, and you're done."
Usage guidance
Used once, for a short defined window right at the end of the grow.
Hydroponic systems
Drain your reservoir, refill with Flawless Finish at 2ml per litre, run for around 6 hours to wash the roots and root zone, then drain again and refill with plain water. Feed only water from that point to harvest.
Soil systems
Thoroughly soak the medium with Flawless Finish at 2ml per litre, leave for around 6 hours, then flush through with plenty of fresh water. Continue with plain water only until harvest.
Timing
Start roughly one week before your planned harvest date.
Technical specifications
- Format: liquid concentrate
- Dosage: 2ml per litre
- Use period: approximately 1 week before harvest
- Purpose: strips residual salts and nutrient build-up from plant and medium
- Compatible media: hydroponics, coco coir, soil
- Brand: Advanced Nutrients
Who this is for
- Growers who've been running a full feed schedule and want a clean finish before harvest
- Anyone who's noticed a harsh taste or smell in previous harvests, which can point to nutrient residue
- Hydro growers in particular, where salt build-up in the reservoir can be more pronounced than in soil
Our take
A proper flush is one of the cheapest, easiest ways to improve the final quality of a harvest, and Flawless Finish gives you a clear, repeatable process rather than just guessing with plain water.
Worth picking up if you want straightforward feeding without the hassle of working out your own flush routine from scratch.
