Quote Originally Posted by Rusty Trichome
Quit overwatering, no nutrients or additives for at least another week or two, and keep a fan on 'em. The breeze will strengthen the stem so you won't need to support the plant. It'll also help dry-out that oversize pot of water-saturated soil before the next feeding.
Tiny plants should be in tiny pots. One or two cups, for instance. ("kegger cups" work good too, but poke holes for drainage) Medium plants, medium pots. (one or two gallon pot, for instance) Big plants, big pots...(three or five gallon nursery pots)
Almost any nursery has used pots. I pay 10 cents per 1 gallon black nursery pot, 15 to 20 cents for 5 gallon pots. (clean 'em good to avoid molds and bugs)
No nutrients till the 3rd or 4th set of true leaves.