Hey man, if you don't want to transplant, you can just put dirt in the bottom of another pot the same size and set that pot inside it. The roots will grow down through the holes into the second pot if they need the extra space. Kinda a cool little trick. I transplanted mine into 5 gallon pots and they're growing like an inch or two a day now that they're under the HPS. I think they like they're new containers/light. Check the newest pics i posted (first link in sig)