Hi COld,,,,

You plant seems to be doing very well,
And It looks like the new NODES and FAN LEAVES are surpassing the sets before them size and health wise...

These are all good signs..

But the red stem is not a good sign and can often mean lack of NItrogen.. Some people may tell you it is gentics... : )

HAve you been feeding your lpant any Nitrogen... or complete NUTRIENTs
NPK ?

How about your PH? Do you PH your water? MAybe there is plenty of nutrients in the soil bt you PH is off so the plant can't absoorb the nutrients?

And the final question... Are you using Miracle Grow potting soil?

WHEN WE ARE mean to others.. we always loose..
iloveyou