i found a post about four months ago on how to rejuvinate potting soil. i cant seem to find it or anything similar again. can anyone point me in the right direction. it is Miracle Grow Moisture contol, used for one grow. i used 20-20-20 for the veg. and 15-35-15 for the flower, with seven four foot flourecent grow bulbs in a four foot square. should i try to rejuvinate the soil with some worm castings, bat poop, kelp etc. or dump it in the composter and start with new soil. the seed came from a friend so i dont know the pedigree. i think i am going to get about one ounce per plant, not what i had hoped for. any sugestions. thanks mick