Your plant looks healthy but it is growing fast because it is stretching for more light. You need more. That's also a major reason you'll see low leaves yellow and drop- when they no longer have enough light to photosynthesize, they are consumed and discarded by the plant.
Adding light will fix your issues.
stinkyattic Reviewed by stinkyattic on . Been growing my plant for 3/4 weeks - just some questions... hi, This is my 1st grow attempt. Ok well i have been growing my plant (from bag seed) in soil for just over 3 weeks now but i have a few questions... 1) Some of the leaves are getting yellow bits on the edge of them - what could this be and what can i do about it? (lol) - pic of one of the offending leaves included. 2) Its had quite alot of stress (I accidentlly knocked the cabinet over when i was drunk and it all came out the pot - i immediatlly put it back in and filled the soil Rating: 5