Growing under lights

Growing under lights allows plants to be in light 24 hours a day, promoting vigorous growth. Some growers use 18 hours light and 6 hours dark. Many types of lights are available. Agro-type HPS and HMI lights are better for growing in doors and a single 400watt light is easier to handle ten 40watt fluoro lights. However they are expensive and require a control box to fire the globe($200 – $400 for a 400watt globe, reflector and control box.). Fluorescent lighting is also effective, Gro-lux and other Agro-type tubes are available but aren’t as powerful. Fluorescent light fitting can be purchased second hand for about $5 – $15 for single a 36 watt fitting and $10A – $25 for a double 72 watt fitting.

The ph for the cannabis plants

The pH is a measure of the acidity or the alkalinity of the solution. Normally the pH ranges from 0 to 14. A low pH (lower than 7) means that a solution is acidic. Pure water has a pH of around 7 which is neutral. Higher than 7 is called alkaline. Acidic solutions can be neutralised with alkaline solutions and vice versa or big bud feminized. Too acidic is fatal for any plant and so is too alkaline. One of the causes is that the nutrients change into a, for the plant, unabsorbable form when the pH becomes too high or low.