A symptom is a clue, not a diagnosis
Inspect the whole system first
Compare healthy and affected plants and note whether new or older leaves show symptoms. Inspect roots, flow, drains, reservoir level and recent environmental changes. Deficiency, pH issues, pests and disease can produce overlapping symptoms; a photograph cannot prove a particular nutrient is missing.
Verify calibration, water volume and mixing records before intervening. Do not use isolated parts, unlabelled pesticides or disinfectants as a universal cure. Keep dated photos and readings and obtain qualified help for persistent or severe problems.
Further reading
- University of New Hampshire Extension — Scouting and Managing Greenhouse Nutrient Problems
- Colorado State University — Root Disease Problems and Management in Hydroponic Systems
These sources support general cultivation guidance, not verified Nana Organics product performance. Current NaO instructions take precedence over another brand’s feeding schedule.