Also I should add, I have been watering them once every 2 days or so, and I gave the ones in the 4" pots their first nutes a few days ago, and they seemed to agree with them, so thats cool. But I just got my PH test kit from the pet store yesterday, and it looks like my water it highly basic, so i added a LOT of ph down, but my tests are still coming out rather blue, which is a bit confusing, as the bottle says add 1 drop to a fish tank per gallon of water to lower the PH .5. Is there something I'm missing? Do I have to really mix in the PH down with my water or will just putting some drops into my watering can be enough?