A few days ago i noticed a few brown spots on some of the upper sets of leaves im not to sure what this is, im giving them calmax for calcium and magnesium before this happened, any ideas?
Plants suffering calcium and or magnesium issues are old plants or very sick plants ...whats yours??? we go for the later and see little perlite in the soil ..pot up to 30% at next pot up, why are you feeding them calcium..? theres normally enough in the local water if you are in the Americas North?