From 20,000 to 23,000 lumens depending on the brand.
Average figures:
Incandescent: 10 lumens per watt
Halogen 13 lumens per watt
CFL (low-energy) 50 lumens per watt
500 lumens per 100 watt
Between Metal Halide and Mercury Vapor the higher output is emitted from the Metal Halide lamp.
Yes assuming the ballast is also for a metal halide lamp.
No. A mercury vapor lamp will work on a metal halide ballast, but not the other way around.
ignitor will work as a tublight stater
There really are no advantages of an ED28 over an ED37. If they are both metal halide lamps then the only difference between them, provided they have the same wattage and color temperature, is that they have different dimensions and different size bases. They will require different size sockets and will likely require different ballasts.
An HQI metal halide lamp belongs to the family of metal halide HID lamps. Hydrargyum quartz iodide (HQI) lamps differ from standard metal halide lamps in that they are often smaller and are offered in double ended versions and require a special socket. The gasses and metal halide salts used in HQI and standard metal halide lamps are the same.
Between Metal Halide and Mercury Vapor the higher output is emitted from the Metal Halide lamp.
No, the ballast has to be matched to the lamp. 250 watt ballast, 250 watt lamp. Also be sure to match the lamp type to the proper ballast even though the wattage is the same. HPS ballast to HPS lamp, Metal halide ballast to metal halide lamp and mercury vapour lamp to mercury vapour ballast.
No. The lamp has to match the ballast. The lamp will not ignite if the wrong ballast is used.
Yes assuming the ballast is also for a metal halide lamp.
6000lm
Yes the ballast and starter are the same you can run halide in hps, but not hps in halide.
No. A mercury vapor lamp will work on a metal halide ballast, but not the other way around.
A metal halide lamp's Harmonized Tariff number would fall in the category of "8539.32.00 Mercury or sodium vapor lamps; metal halide lamps". See "Related Links" below for the US government's online list of Harmonized Tariffs.
ignitor will work as a tublight stater
For general calculations VA is the same as Watts.
To grow marijuana in the vegetative stage. HPS for flowering