The recommended light is an High Pressure
Sodium ballast, they are ideal for indoor
growing and are used by professional hot
house growers. They come in a veriety of
different wattages, 250 W, 400 W, 600 W,
and 1kw.
A 400 Watt ballast useing a son-t or son-t
agro bulb or equivalent version depending
on the manufacturer, will give enough light
for one square metre
electrical wholesaler, phone round the list in the yellow pages, i found
a good quality ballast that included the bulb for £65 + VAT, prices
ranged from £65 to £250 depending on the manufacturer/ wholesaler
SHOP AROUND BEFORE YOU BUY.
If you plan to use a timer to control your lights, use an high current
relay between the timer and the lights, as the lights draw an high
current and will burn out the contacts in the timer.
AVAILABLE FROM MAPLINS & FARNELLS ETC
When setting up your lights suspend them on chains or other suitable
cables, that will allow you to easily adjust the height as you will want
to keep increasing the height as your plants grow, keep a 60cm gap
between the top of the plant an the ballast.
High wattage lights give off heat, ventilation and fans are needed
to circulate the air so the plants can absorb oxygen.
This is basic information, more detailed growing techniques can obtained
from the interet free of charge or from good growing books.
