Okay that sounds pretty easy! And I currently am using plain potting soil! I purchased it from my local nursery, it's all organic and they actually make the soil themselves. It contains cocofibers and a few other things. Thanks again for your speedy reply! My hydro shop isn't open on Sundays unfortunately, but ill be there first thing tomorrow to buy all my new supplies. My sativa plants are just now beginning to yellow at the bottoms like my purple kush indica plants were, so I'm hoping I can salvage them all with this new soil mixture. Ill definitely be watching the video tonight that you posted also. Thanks again, if my plants manage to survive this- it's all because of you & your advice!