Flue Curing

Flue curing differs from air curing in that the process is speeded up by using an external source of heat, and the air circulation is more closely regulated. This method can be used with small quantities of material in a small, airtight curing box constructed for the purpose. Large quantities can be hung in a room or barn as described in Air Curing. A simple way to control the temperature when curing or drying small amounts of marijuana is to place the material to be cured in a watertight box...

Grow mediums

Some people swear by soil and soil less mediums. If you decide to go this route make sure you get some quality soil. I have been using miracle grow potting soil with pretty good results. Just make sure it drains water well. You can add sand or Perlite to make the soil more drain-able and aerated. Once you get past the cups you will want to transplant into bigger pots. A good rule of thumb is for every foot of growth you will want 1 gallon of pot space. I still start out with the rock wool and...

PH Fluctuation

Both of these leaves in figure 6 and figure 7 are from the same plant. It could be over fertilization, but more likely it is due to the pH being off. Too high or too low a pH can lock up nutrients in the form of undisolvable salts and compounds, some of which are actually toxic to the plants. What then happens is the grower then tries to supplement the plants diet by adding more fertilizers, throwing off the pH even more and locking up even more nutrients. This type of problem is seen more...

Nutrient Solution Burn

There's a good chance that this leaf was subjected to nutrient solution burn. These symptoms are seen when the EC concentration of hydroponic solutions is too high. These symptoms also appear when strong nutrient solution is splashed onto the leaves under hot HID lamps, causing the leaves to burn under the solution. Many hydroponic gardeners see this problem. It's the beginning of nutrient burn. It indicates that the plants have all the nutrients they can possibly use, and there's a slight...