Help

Nutrients too high? Two different plants. I'm running a two bucket rdwc with a third bucket as an extra res. My ph is around 6.5ish I'm using strips. My ppm pen shows around 550. Growing from seed. Any help is appreciated. Thanks

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calcium dude.. looks to me like you got a lock out

I believe your PH should be more 5.5-5.8 for nonsoil grows.

Add a Ca/Mg at full strength as directed by the maker and lower your pH to 5.9 and don't let it go over 6.2. Check pH daily at lights on and adjust accordingly.