The stock rating for OEM bulbs is 4300K or Kelvin. You can "upgrade" to more intense bulbs 6000K, 8000K, 10000K. But from my understanding they will not put out as much usable light. Stay around 5-6K. OEM replacements are 100 dollars each from oemacuraparts.com The OEMS are made by Osram. They are a D2R style or format.
A ballast is a ballast in most cases. So yes you should be fine.
Generally the lumen output of bulbs is proportional to the power used, if the bulbs are operated at their rated voltage.
around 20
This question is ill posed. Lumen is a unit of measure for how much light comes from the lamp Watt is a unit of measure for how much energy is used by the lamp If the question were; "Which is brighter, a 2000 lumen bulb or a 1500 lumen bulb?" then the answer would be: The 2000 lumen bulb. I think the relation ship between lumen and watt is something like: Incandecent bulbs are 15w/lumen Flourecent bulbs use 40w/lumen LED bulbs are 70w/lumen The way to show the watt and lumen relationship is usually lumens (amount of light) per watt (energy consumption). This is like gas in your car (Miles or KM per Gallon or Liter). Incandescent bulbs have a maximum luminosity of 52 lumens/watt. Fluorescent bulbs range from 46 lumens/watt (CFL) to 100 lumens/watt (T5 and T8 tubes) LED bulbs range from 29 lumens/watt (older, low efficiency) to 100+ (XCree) and they are getting better.
Any HID head lamp bulb above 6000K are illegal.
The output of bulbs varies. A typical output of a 60W incandescent bulb is 680 lumens.
The 100 watt lumen-equivalent bulbs use 20 watts. The 60 watt lumen-equivalent bulbs use 16 watts.
250W tungsten halogen gives around 10,000 lumen. 2 x 39W T5 fluorescents gives a total of between 4,000 to 6,000 lumen.
This depends on the type of bulb and it's efficiency. Incandescent bulbs produce 700-900 lumens at 60 watts.
Loose bulbs will yield better plants.
10-11 lumens per watt for incandescent bulbs 13-14 lumens per watt for halogen 50-60 lumens per watt for fluorescent