maybe a little short but it can be normal i grow in hydro so they grow faster so i cant tell. your leaves seem to need some epson salt but be sure to leave out any outher problems first. i have had some problems myself whith spots and rusty leaves so try 1/2 teaspoon of epson salt per gllon of water. i putit in hot water so its disolves good and wait to the water gets into room temp.epson sat isent table salt so be sure to get te rigth stuff in health shops or farmacies. you can try it on one plant in the beginning and wait 5-6 days for resolt. chec the ec on the salt not to be higher than the dirt little less than i sayd can go along way.but the moast important is to read about the subjekt read read. hopes this helps...