[zolar]

if a seedling is lanky its reaching for more light move it closer to the light [scrap 2x4 chunks make great cheap height adjusters for smaller pots]
when i get thin stalks i support it with a pipecleaner/florists wire/ solid house wiring wire bent in a 1/2- 1 inch circle around the stalk and pushed into the dirt/ grow media also placing a computer fan running of a 12volt power supply[ i uise motorcycle battery charger] near enough to make leaves stalk move slightly stress the plant into developing a thicker stalk

and it gets stronger for its height so it'll hold up bigger buds later on