baby midgrain strain

the sucker leaves on my young midgrain plant is turning brown is this ok

you need to figure out whats causing it first then try and fix it before it gets too bad.. change anything recently? what kind of soil u using? whats the temperature? been fertilizing?

all is the same i have 3 week old plant and shes starting to grow fast,the tip of the leaves on my bigun are turning brown and curling sidwayz,but only one out of the 3 midgrians is doin it