potting queston

im having great sucsess with my new clones which im very happy about.they are around 5inches tall and looking happy and healthy.i still have them in small pots which are about 4inches x 4inches in height.the problem is small roots have started to appear out of the drainage holes at the bottom of the pots,does this mean i should re-pot in to bigger tubs or will they be ok for awhile longer till they are a little bigger.many thanks.

I wouls start now about thinking of getting the biggest pots you can fit all the plants in the room.i always start floering at about 7 ince to a foot they will tripple in size during the first 3 week of flowering by budding early you will get max yeiled with the plants getting at least a good 4 week of light on the bottom harf and 4 week on the top sea of green.you may have to pull the odd leaves off during the grow for better air flow,you want at least 2 fans one at each side if you are growing more than 6 plants.1 will be enouth just if the plants you have are in the 6 bracket .make sure that you have a good exaust fan to pull the air into a crawl space i use a pair of old tights to stop any creepy crawlys getting in the grow room just put over the exit hole of the exaust pipe and seccere with a rubber band.