as seen on overgrow.com and High Times

Soil mix recipe

1 bag of FoxFarm Ocean Forrest pottting soil(teal-colored bag-1.5 cu. ft) $17-$25.
1 bag of FoxFarm Planting Mix with bat guano and earthworm castings (red bag-1 cu. ft.) $15-$20.
1 bag of Light Warrior High Yeild blend(dark blue bag - 1 cu. ft.) $15-$20.
8-10 quarts of perlite. ( i prefer the FoxFarm "chunky" perlite, but it can be expensive.)~ $8
1 cup of FoxFarm Peace of Mind Fruit and Flower Fertilizer (NPK ratio 5-8-4) $7 for a box containing about 15 cups.

Use a kiddie pool and a regular shovel to mix it all together. I keep a 40-gallon tub of this mix ready to use at anytime.
The whole mixture adds up to approximately 45 gallons of soil and will fill ten 4- gallon buckets or eight 5-gallons buckets.


Moonshine's Mix

This organic recipe provides a soil mix so rich that no additional fertilizers are required during watering. Plain, pH-balanced water is used throughout the life of your pot plant. As the mix becomes depleted of nutrients, three well-timed transplants into larger containers allow plant roots to reach deeper for the newly replenished soil.


Watering

Monitor the pH of the plain water that you use to irrigate your plants. Make sure to adjust it to a pH of 6.5 and allow the soil mix to dry out between waterings. A good wet/dry cycle is vitial to your success- too wet and the plants will drowned, too dry and they will wilt and lose vigor. After a while, you will know by the weight of the container when your plants need to be watered.


Transplanting

Plants require timely transplanting into larger pots to ensure nonstop growth and foliage development. Rooted clones are planted in 1/2 gallon containers and continue to grow in the veg- state. two weeks later, the plants are carefully moved into 2-gallon pots, where they grow for an additional 2-3 weeks. Just prior to flowering, transplant the plants into 4- or 5- gallon buckets for the duration of the blooming stage until harvest. Always water plants thoroughly before transplanting them to ensure that the soil mix and the root ball stay intact. Longer-flowering sativas(90 days or more flowering) may need larger containers, such as a 10 gallon garbage can with hole drilled in the bottom.
I've used many other soil mixes, and none compares with my Moonshine Mix. Even the guys at my local grow shop are recommending it to their other customers. The response and the results have been overwhelming. Grow organic!!