Algae grows wherever light hits your hydroponic reservoir. Block the light, keep water below 72°F, and treat with H2O2 when it appears. Full protocol inside.
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Plant Problems
Something looking off? Diagnose and fix the most common hydroponic problems, from root rot and algae to yellowing leaves and pH swings, with clear causes and step-by-step fixes.
Leaves curling up means heat or light stress. Curling down often means dissolved oxygen below 3.8 mg/L. Use curl direction and leaf age to find your cause.
Yellow leaves in hydroponics mean root rot or a nutrient deficiency, and the fix for one worsens the other. A 60-second root check tells you which you have.
Hydroponic plants wilt even in water when roots can't absorb oxygen fast enough. Here are the 4 causes of wilting and the exact steps to fix each one.
Hydroponic leaves turning brown? Four causes look similar but need opposite fixes. Learn which leaves to check, then apply the right correction.
Yellow hydroponic leaves usually mean nitrogen, magnesium, or iron deficiency, or pH lockout. Use leaf position and vein pattern to find which one.