Could water ph not adjusted be causing ph lockout?

Tap water not pH'd before feeding. Fix: pH all water to 6.5 (soil) or 6.0 (coco) before feeding Use pH Up/Down drops to adjust

Could salt buildup shifting soil ph be causing ph lockout?

Runoff pH different from input pH. Many feedings without a flush. Fix: Flush with 3x pot volume of pH 6.5 water

Nutrient IssuesSerious

pH Lockout in Cannabis

When your water or soil pH is outside the plant's absorption range, roots can't take up nutrients — even if there's plenty available. This looks like multiple deficiencies at once.

What it looks like

●Multiple symptoms at once (yellowing + spots + slow growth)
●You're feeding, but plant looks starved
●Runoff pH outside 6.0-6.8 (soil) or 5.5-6.5 (coco/hydro)

Quick diagnostic checks

1Get a pH meter TODAY — this is a non-negotiable tool

2pH all water before it touches the plant

3Flush and reset at the first sign of lockout

Causes ranked by likelihood

1. Water pH not adjusted

Most common

Signs

●Tap water not pH'd before feeding

Fix

✓pH all water to 6.5 (soil) or 6.0 (coco) before feeding
✓Use pH Up/Down drops to adjust

2. Salt buildup shifting soil pH

Common

Signs

●Runoff pH different from input pH
●Many feedings without a flush

Fix

✓Flush with 3x pot volume of pH 6.5 water

⚠️When to worry

pH lockout is usually the root cause when multiple deficiencies show up at once. Always check pH first.

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