Too Much K? (Locked-out Micros)
Excess potassium can lock out Ca/Mg/Fe, causing mixed deficiencies and burnt tips.
Potassium toxicity? Burnt tips and micronutrient lockout—analyze fast.
Common Causes
- Overuse of PK boosters
- High K in base + additives
- Low runoff leading to salt buildup
How to Tell Which One You Have
Burnt tips/edges plus secondary Ca/Mg/Fe symptoms despite high feed.
FAQ
Fix?
Dial back K-heavy products; flush to target EC.
Add Cal-Mag?
Yes if Ca/Mg signs persist after lowering K.
pH role?
Keep pH in range to minimize lockout.