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white powder at the base growrocks.


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Old 02-11-2009, 04:04 AM
Carlos Carlos is offline
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Default white powder at the base growrocks.

hi RON. My 11 plant system !!!works!!! I have 5 tomato plants and left one of the same age planted on plain soil. The growth difference has been dramatic, but lately my hydroponic tomatoes have a white powder like in the stem at the base where come from the growrocks. Is this salt? or maybe fungi? What could cause the problem? Even if my plants die I wouldn't call it a failure. I plan to keep trying. thanks for the help CARLOS AT PLANTATION

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Old 02-11-2009, 04:05 AM
Ron Ron is offline
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Yes that is fertilizer salts residue. Nothing to worry about. You can flush with clean water every couple weeks to get rid of salts buildup and any mold that will inevitable be present.

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