You shouldn't be fertilizing yet at ALL.
I assume that is shultz fert. You'll want to look into cannabis-specific fertilizers when the time comes to use them (after 5 nodes have formed).
The yellow leaf tips are fert burn. Water heavily with plain tap water until some water runs out the bottom of the pot.
The round leaves turn yellow as the plant no longer needs them anyway, so don't worry about those.
Go sox.
stinkyattic Reviewed by stinkyattic on . Why Could this one be yellow? This plant is growing "ok" but I'm wondering why the little round leaf is turning yellow.. I've got a few ideas of my own but I just want to get some other opinions on it. It's 10 days old watered every 5 days, for the last few times, watered with a little 7-7-7 added in the water because the plants had fallen over but now they are doing ok, theres three plants altogether but only one of them is doing this(the little yellow round leaf), they are all being treated equaly and the pH is Rating: 5