Hydroponic Troubleshooting Guide 2026 | Fix Common Problems
Fix common hydroponic problems. Diagnose and solve nutrient deficiencies, pH issues, root rot, and algae in your growing systems.
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Why are my hydroponic plants turning yellow?
Yellowing usually means nitrogen deficiency or pH lockout. Check pH first (should be 5.5-6.5). If pH is fine, increase nutrients by 20%. Lower leaves yellowing is normal as plants mature, but new growth yellowing needs addressing.
How do I prevent root rot in hydroponics?
Keep water temperature below 72F (22C), ensure adequate oxygen (air stones for DWC), keep light out of reservoirs (algae creates problems), and use beneficial bacteria like Hydroguard. Brown, slimy roots mean rot - healthy roots are white and firm.
Why is algae growing in my hydroponic system?
Light + nutrients = algae. Block all light from reservoirs and channels with opaque containers or black tape. Algae competes with plants for nutrients and reduces oxygen. Prevention is easier than cure.
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