Grotek Final Flush for a Clean Pre-Harvest Finish

A Cleaner Root Zone for the Final Run-In

Grotek Final Flush is a finishing solution that helps strip excess nutrient salts and built-up fertiliser residues out of the growing medium in the last stretch before harvest. Used over the final 7 to 10 days of the cycle at 2ml per litre, it dissolves and mobilises accumulated salts so they wash out with normal watering, leaving plants to ripen in a cleaner root environment. Suitable for hydroponics, coco coir and soil, in Regular, Blueberry and Green Apple.

Key Benefits

• Removes excess nutrient salts from the root zone rather than just diluting them
• Clears fertiliser residues that build up in the medium over a full cycle
• Supports a cleaner finish in the last stage before harvest
• Works in hydro, coco and soil, so one product covers every room in the house

Salt Build-Up in the Final Weeks

Feed heavily for a whole cycle and salts accumulate in the medium, particularly in coco and soil. Left in place, that build-up hampers nutrient uptake and leaves plants finishing in a dirtier root environment than they need, and plain water alone often will not shift bonded salts. Final Flush mobilises them so they actually leave the pot during the flush period.

How to Use

• Hydroponics: mix at 2ml per litre in a clean reservoir and run it in place of your normal feed
• Coco coir: mix at 2ml per litre and water through until the medium is fully saturated with a healthy run-off
• Soil: mix at 2ml per litre and water thoroughly so the whole root ball is wetted
• Timing: begin as plants enter their final ripening stage, over the last 7 to 10 days before harvest
• Repeat: continue at each watering through the flush period until harvest
• pH: adjust the mixed solution to your usual range for the medium before applying