Originally Posted by
JB
Sign for me to feed would be pale colour to the leaves, lightening from bottom to top would indicate a lack of nitrogen.
Calcium and magnesium have tale tale discoloration of the leaves which is easy to learn once you've seen it and would indicate the plants need more feed or more cal/mag.
5 weeks sounds about the limit for nutrients in plant magic soil so without seeing the plant I can't be sure but I wouldn't necessarily say you've feed to early.
Brown/orange spots would make me think of calcium deficiency but a picture says a thousand words.
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