i have 5 nirvana northern lights seeds that i germinated and put into my soil yesterday, but i bought scotts pemium potting soil and on the bag it says Benefits Continuous feeding for up to 4 months. Fertilizer Analysis .07 - .01 - .03 i heard it was bad to use time-release nutrient soil, but should it be ok anyway? i also have some liquid nutrients (10-15-10) and i also want to know when i should start adding that
Time release sucks.....just water with plain water and you should be fine, but I would change soil when you transplant.
how long can i keep my plants in those red party cups or how big can they get before i move them to a bigger pot?
After they sprout I would say 7-14 days until transplanting, it really depends on the plants root growth speed, when your plants have 3 sets of leaves they should be ready to transplant. I usually use red party cups with the bottom cut out and placed inside a clear party cup so I can see when the roots have reached the bottom.