Grow More® Mendocino Producer's Choice Purge — 2.5 gal

Grow More® Mendocino Producer's Choice Purge (2.5 gal) — Advanced Nutrient Salt Flush & Root Zone Clearing Solution

Grow More® Mendocino Producer's Choice Purge is a precision flushing solution designed to clear accumulated nutrient salt deposits from growing media, root zones, and irrigation systems. Over the course of a grow cycle, residual mineral salts from fertilizers accumulate in substrate pores and on root surfaces, raising media EC, interfering with nutrient uptake, and reducing the efficiency of late-stage feeding. Purge is formulated to bind and mobilize these salt deposits, allowing them to be safely flushed from the root zone with irrigation water.

Part of the Grow More Mendocino Producer's Choice line, Purge is engineered as a high-analysis, 100% water-soluble formula that works efficiently in soil, coco coir, and hydroponic systems. Used strategically in the final days of the crop cycle, Purge helps ensure that accumulated fertilizer residues are removed before harvest — a practice associated with improved final product quality, aroma expression, and a cleaner finished yield. The 2.5 gal format provides ample volume for mid-to-large scale indoor growing operations.

Key Features & Benefits

• Salt Binding & Mobilization: Actively chelates and mobilizes accumulated mineral salt deposits from growing media and root surfaces, enabling them to be flushed out with standard irrigation.
• Improves Late-Cycle Nutrient Uptake: By reducing salt accumulation and lowering media EC, Purge helps restore normal osmotic conditions in the root zone, allowing plants to draw in water and remaining essential nutrients more efficiently.
• Pre-Harvest Clearing: Used in the final days of a grow cycle to remove fertilizer residues from the growing medium, supporting cleaner harvests and improved final product quality.
• Compatible with All Growing Media: Effective in soil, coco coir, rockwool, and hydroponic systems — flush reservoirs and media alike with a single product.
• 2.5 gal Format: Provides sufficient volume for treating multiple growing systems over one or more flush cycles, with enough product for full run-off flushing in mid-to-large operations.

Who Should Use This

Mendocino Producer's Choice Purge is recommended for indoor cultivators, commercial greenhouse operators, and hydroponic growers who run complete nutrient programs and want to manage salt accumulation systematically. It is particularly valuable in the final week or two of the crop cycle, when removing fertilizer salt residues is most impactful for product quality. It also benefits growers who notice elevated media EC, nutrient lockout, or reduced plant vigor mid-cycle due to salt buildup.

Compatibility

Compatible with soil, coco coir, rockwool, DWC, ebb-and-flow, and NFT systems. Mix at the recommended rate and apply as a full-volume irrigation flush, ensuring complete run-off. Can be used mid-cycle for heavy salt-accumulation correction or as a final flush before harvest. Part of the Grow More® Mendocino Producer's Choice system but compatible with any complete nutrient program.

Frequently Asked Questions

When should I use Purge during my grow cycle?

Purge is most commonly used in the final 7–14 days before harvest to clear accumulated nutrient salts and reduce media EC. It can also be used mid-cycle to address salt lockout or when media EC reads significantly higher than solution EC, indicating heavy salt buildup in the root zone.

How does Purge differ from plain water flushing?

Plain water dilutes surface salts but has limited effectiveness at binding and mobilizing deeply embedded mineral salt deposits within substrate particles. Purge uses chelating chemistry to actively bind and suspend salt deposits, making them much more soluble and easier to remove with a standard irrigation flush.

Will Purge stress my plants if used mid-cycle?

When used at the recommended rate, Purge is designed to be plant-safe and should not cause stress. It is formulated to address salt accumulation rather than strip beneficial nutrients from actively growing roots. Always follow the label rate and resume regular feeding after the flush cycle.

Can I use Purge in a recirculating hydroponic system?

Yes. Drain and refill the reservoir with a Purge solution and circulate for the recommended time before a complete reservoir drain and fresh nutrient refill. This effectively clears accumulated salts from both the reservoir walls and system tubing.