..............not getting enough calcium/magnesium from the water, Cal-mag to buffer out the waterThis is in dwc
the ph is in the range it should be
i added 1 cap of FFGB to it last night thinking it was a mg def
They look like rust spots in color
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doesnt look like rust fungus, i think you have a handle on your problemim working on getting cal-mag+ ordered, hopefully thats the problem cause my last grow did the same thing with the rust spots all over it had awful stunted growth and the roots died back
....................................good good we are looking forward to picturesits been 3 or 4 days since using cal mag + and it helped A LOT ill post a picture tomorrow
Just wondering why your using soil in a dwc system, they dont mix well. Usually those rust spots are salt build up in soil and need a flush with no nutes and water ph'd to 6.5 .