Plant Magic Flush Finish — Pre-Harvest Flushing Agent for Clean, Quality Crops
Best for: Growers wanting to remove excess salts and improve final crop taste without paying premium finisher prices
Our thoughts
This is a proper bit of kit for the final stage. Plant Magic Flush Finish does what a flushing solution should do — helps plants use up remaining nutrients and clear out salt buildup — but it's been formulated specifically for UK water profiles, which actually matters. One we recommend for growers who want better taste and cleaner harvests without overcomplicating the endgame.
Plant Magic Flush Finish is a pre-harvest flushing agent designed to work during the final 10 days before harvest. Unlike plain water flushing alone, it actively helps plants use up remaining nutrients in the medium whilst clearing excess salts, which can improve both taste and potentially yield. The formula includes maturation hormones that encourage plants to finish faster, and it's been developed specifically for UK water profiles — something most competitors don't bother with.
How it compares
This sits in the mid-tier flushing solution market against established names like Canna Flush and Advanced Nutrients' Flawless Finish.
- Works across soil, coco, and hydro — same versatility as premium brands
- Simple 5ml/L dosage with no pH adjustment needed (easier than some competitors)
- Formulated for UK water conditions — targeted approach competitors don't offer
- Better results than water-only flushing, at a lower cost than premium finishers
- Does the job without the brand markup
In plain terms, you're getting a working flushing solution that's been tailored to how water actually behaves in the UK, at a price that leaves room in your budget for the rest of your programme.
Usage guidance
Plant Magic Flush Finish is straightforward to use and works across different growing setups:
Application rate
5ml per litre of water. Mix well and do not pH adjust — this is important. The product is designed to work with your water as it is.
Timing
Use for one week, starting around 10 days before harvest. After that week, empty your reservoir and switch to plain water only for the final week. This two-stage approach gives you the best results.
Soil growing
Empty and refill your reservoir with Flush Finish at 5ml/L. Run it through normally, then follow with plain water for the final week.
Coco and hydro systems
Works cleanly in run-to-waste and recirculating systems. Apply the same protocol — one week of Flush Finish, one week of water.
Important notes
Do not mix Flush Finish with other products. Do not adjust pH when using it. Empty your system completely before switching to water for the final stage.
Technical specifications
- Product type: Pre-harvest flushing agent with maturation hormones
- NPK analysis: N: 3.8, P: 4.1, K: 7.1
- Key ingredients: Calcium, magnesium, bio-stimulants
- Application rate: 5ml per litre
- Usage period: One week, 10 days before harvest
- Suitable for: Soil, coco, and hydroponic systems
- Available sizes: 1L and 5L bottles
- Shelf life: 6 months once opened; 2 years from production date
- pH adjustment: Not required — do not pH when using
Who this is for
- Growers wanting cleaner, better-tasting final harvests without premium pricing
- Anyone running soil, coco, or hydro systems in the final flowering stage
- First-time finisher users who want a straightforward, no-fuss approach
- Growers in the UK where water profiles vary and need a product formulated locally
- Anyone tired of salt buildup affecting final crop quality
Particularly well suited to growers who understand that what happens in the final 10 days makes or breaks the final harvest.
Our take
This is a flushing solution that actually does what it should. It clears excess salts, helps plants finish properly, and improves taste — and it's been formulated specifically for how UK water behaves, which is a detail most brands ignore.
If you're serious about final crop quality and don't fancy spending twice as much on an imported finisher, worth picking up. Does exactly what it says it will, and that's all that matters at the endgame.
