Hydroponic Diseases

  • Hydroponic Nutrient Lockout: Spot Leaf Symptoms & Fix

    ByFaisal Habib

    Home > Hydroponic Nutrients > Hydroponic Nutrient Lockout: Spot Leaf Symptoms & Fix Last Updated: July 11, 2026 | Fact Checked By: Current Gardening Editorial Team Quick Answer: What is Nutrient Lockout? Hydroponic nutrient lockout occurs when your plants cannot absorb specific minerals (like Calcium or Iron) even though the minerals are present in the water. This is almost always caused by an incorrect pH level (outside the 5.5 – 6.5 range) or an excessively high salt concentration (EC > 2.5). To fix it, you must immediately flush the system with pH-balanced water (EC = 0.0) for 12 hours, then introduce a fresh nutrient solution at half-strength. Danger Level Critical…

  • Hydroponic Root Rot Prevention: The Complete System Hygiene Guide

    ByFaisal Habib

    Home > Hydroponic Maintenance > Hydroponic Root Rot Prevention: The Complete System Hygiene Guide Last Updated: July 11, 2026 | Fact Checked By: Current Gardening Editorial Team Quick Answer: How to Prevent Root Rot Root rot (Pythium) is caused by a lack of dissolved oxygen in the water. The warmer the water, the less oxygen it can hold. To permanently prevent root rot, you must keep your reservoir water temperature strictly below 70°F (21°C) using a mechanical water chiller, block 100% of light leaks from entering the reservoir, and run heavy aeration (large air stones). As an added insurance policy, inject the system with a beneficial bacteria supplement like Hydroguard…