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The distance from the top of the plant to the bulb should be between 12-18 inches this is ideal for a 400 watt HPS. The higher the wattage the higher away from the canopy the lower the wattage the closer it should be some people use fluorescent tubes these can go as close as 1-2 inches away from the tops of the plants. Lights that aren't at the right distance may either burn your plants or just make them hug the ceiling.
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Can I replace a 230 watt linear halogen lamp with a Watt linear halogen lamp with safety in a flood light?
A 230 watt linear halogen lamp should be replaced by a 230 watt linear halogen lamp if the same brightness is required.
Can you use a 70 watt metal halide lamp in a 150 watt ballast?
Yes assuming the ballast is also for a metal halide lamp.
Can you replace a 6 watt bulb with a 10 watt bulb?
As long as the lamp holder will take the larger wattage lamp and the current of the circuit is sized to take the larger current then yes, the lamps should be interchangeable.
Can a 34 watt T8 bulb be put in a fixture designed with a 40 watt T12 ballast?
the 35 watt lamp will work in a 40 watt ballast.
How many lights to grow 4 plants?
No you would need a 400 watt hps lamp for flowering but you could probably use that cfl for the veg period
Can I replace a 230 watt linear halogen lamp with a Watt linear halogen lamp with safety in a flood light?
A 230 watt linear halogen lamp should be replaced by a 230 watt linear halogen lamp if the same brightness is required.
Can you use a 70 watt metal halide lamp in a 150 watt ballast?
Yes assuming the ballast is also for a metal halide lamp.
Why does a 100-watt lamp glow brighter than a 25-watt lamp?
because it has more watts
Can you replace a 6 watt bulb with a 10 watt bulb?
As long as the lamp holder will take the larger wattage lamp and the current of the circuit is sized to take the larger current then yes, the lamps should be interchangeable.
What size cable to use on a 50 watt lamp?
16 AWG is plenty large enough for a 50 or 100 watt lamp.
Can you put a lower 13 watt bulb in a 15 watt lamp?
Yes. Lower wattage would be safe for the lamp wires and components.
Can a 34 watt T8 bulb be put in a fixture designed with a 40 watt T12 ballast?
the 35 watt lamp will work in a 40 watt ballast.
How many watts does a mini lamp use?
6 watt bulb for mini lamp
How many lights to grow 4 plants?
No you would need a 400 watt hps lamp for flowering but you could probably use that cfl for the veg period
Can you put a 100 watt bulb in a 75 watt lamp?
Yes, you CAN. The real question is whether or not you should. There is always a fire hazard, especially if the lamp is near drapes, or has a large shade or whatnot on it. If it was me I'd only use a 60 watt bulb in a 60 watt lamp.
What is the lumen output for a 100 watt fluorescent lamp?
10-11 lumens per watt for incandescent bulbs 13-14 lumens per watt for halogen 50-60 lumens per watt for fluorescent
Can you use a 5 watt bulb in a 4 watt light?
If the socket threads of the lamp are the same then yes the bulbs can be interchanged. The 5 watt bulb will glow brighter than the 4 watt bulb. If by a 4 watt light you mean a 4 watt fixture, then it is not recommended to place a larger wattage lamp in a fixture that is rated by the manufacturer at a specific operating wattage
