bottom leaves are dying... please help

[old_smokey9483]

I have about 6 8 inch plants at home and their bottom leaves are starting to die out, is this normal?

 

[jay_420]

the bottom of the leave are bugs you cant see (mites)

 

[SmokeyMacPot]

can you give us more info it may be bad nutes. or if its just the little circle one its normal