Looking nice dude and you've only fed them once now if your getting random spotting on the leaves it could be calcium def then that will lead to a magnesium def now if the tips of your leaves are going brown your feeds to strong as ducks said try and get a pic under natural light or a cfl bulb (light bulb) also under led you will need a calmag supplement there's plenty out there I use canna mono calcium and magnesium there in separate bottles I've also used botanicare calmag [emoji106]
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