Fulvic Acid for Cannabis Nutrient Damage: Recovery Guide
Fulvic acid chelates locked-out nutrients and helps cannabis roots recover after a flush, but it cannot heal burnt leaves. Here is how to dose and when.
Cannabis nutrient burn is fixed by flushing the growing medium with pH-balanced water until runoff EC falls back into the safe range, then restarting at a lower feed strength. This Cannabis Nutrient Burn Fix kit bundles the flush, the reset feed, and a day-by-day recovery schedule, so you stop the damage in a single afternoon instead of guessing. Crispy tips stop spreading within days, and new growth comes in flat, green, and unstressed.
nutrient burn vs nitrogen toxicity in cannabis
Nutrient burn looks worse than it is. The dark, clawed leaves and burnt tips are the plant's response to salt buildup in the root zone, not an infection, so correcting the root zone is the whole fix.
Key Features
- Two-part flush concentrate that clears salt buildup without shocking root hairs
- Buffered rinse that pulls runoff EC back toward the 0.8 to 1.2 range
- Reset nutrient base dosed at half strength for the first week of recovery
- Color-change runoff strips so you can confirm the medium is actually clean
- Printed recovery calendar covering veg, transition, and bloom stages
- Safe for coco, peat, soil, and recirculating hydro reservoirs
- Refillable HDPE concentrate bottles instead of single-use pods
Materials and specs
The flush concentrate is a calcium-chelated blend of mild organic acids and yucca extract that binds free salts and carries them out with the runoff, clearing the medium without stripping beneficial biology. Dose is 5 mL per gallon of pH-balanced water, and each 250 mL bottle treats roughly 50 gallons. The reset feed is a low-nitrogen, fully chelated base that keeps magnesium and iron available while the plant recovers, and the included strips read runoff EC from 0.4 to 3.0.
Leaf Tip Burn in Cannabis: Causes and Prevention
Shipping and returns
Orders leave our climate-controlled warehouse the same business day and arrive in plain, discreet packaging with no product names on the outside. If the kit does not get your plants back on track, return it within 30 days for a full refund, sealed or opened.
cannabis nutrient burn cure time
How long does nutrient burn take to fix?
Expect burnt tips to stop spreading within 48 hours of the flush, with fresh growth looking normal in 7 to 10 days.
Can I use this in hydroponics?
Yes. Mix the flush concentrate directly into the reservoir, run it for 24 hours, then dump and refill with the reset feed at half strength.
Do I have to cut off the damaged leaves?
Only the fully dead, crispy ones. Leaves that are still partly green are still photosynthesizing and will help the plant bounce back faster.