Growing Pot

If You came here looking for info on pots used to plant marijuana, here it is:

Pot Size for marijuana plant

A pot of 6"*6"*6" should be perfect to support good growth. One of these per plant.

Some more details You need to know besides marijuana pot size

Growth space
Must be high enough to allow growth to about 60cm (2-3ft). This requires a space of about 100cm (4ft high). Twice this height should be converted into a two level growing space by inserting a shelf.
There should be between 18inches and 2ft growing space per plant. All of the inside of the growing space should be coated with foil or painted with white paint to increase reflectivity and improve light efficiency. More space than the minimum is always best because good ventilation can greatly improve growth rates.

Organic Soil Mixes to put into Your marijuana pot
There are many different types of soil mixes available and they are easy to obtain from garden centers. Sandy or loose soils are good soils for growing. The exact soil is not all that important. With enough light and nutrients you should have no trouble getting good growth. If you can then monitor soil pH values.
Two proven types are:
-4 parts topsoil, 1 part peat moss, 1 part vermiculite, 1 part perlite.
This is moist, contains medium/high amounts of nutrients and is best for hand watering systems.
-1 part worm castings, 2 parts vermiculite, 1 part perlite.
This is light-weight and high in nutrients.

Fertilizer
The main nutrients that a plant needs to grow are Nitrogen, Phosphorous and Potassium. Most plant fertilizers contain these elements and a good, easily available, one is called Grow More.
If you really want to then here are the some effective ratios of the three elements to be used through the two growth stages.
Early growth stages: 7-9-5 or 5-10-5 or 4-5-3.
For the flowering stages use 3-10-4 or 5-20-5 or 4-30-12.
It is best to build up the amount of fertilizer you use to what is making the plants look healthily green as too much fertilizer can kill the plant.

Soil pH Levels
Any pH level between 6 and 7 is fine but you should aim for as close to 6.5 as possible.

Temperature
Aim for 70 F. Anything higher than 75F will be too hot and will damage growth. Make sure the water for watering is luke-warm.

Good luck !