Are you using bagged soil or your mix ? Alot of the organic bagged soils contain crushed shells of some kind mainly oyster but that helps you PH level alot and unless you are using overly extremely hard water or non organic ferts you should be ok. If you are mixing your own do it all together and then put the soil in your cups instead of a pinch in each and mixed more even balance.

Usually I leave them in these cups for up to 3 weeks before going to a gallon pot. But these are autoflowers ( BlueStreak ) and i'll repot as soon as they sex maybe another week or so before they go into 2 gallon pots.


S_a_H