Apollo Horticulture GLBMH400 400- Watt Metal Halide MH Grow Light Bulb Lamp
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400W Metal Halide Popular Q&A
Q: How to Replace a 400W Metal Halide With a LED.
A: 1. Find LED bulbs that produce a higher lumens per watt than the metal halide bulbs that you are using. Metal halide bulbs range between 65 and 115 lumens per w... Read More »
Q: How to Replace a 400W Metal Halide With a LED
A: Metal halide light bulbs are not as energy efficient as LED light bulbs, so it makes sense to make the switch, whether you want to save money on electricity bil... Read More »
Q: Is 400w Metal Halide too strong for seedlings?
A: ..One thing just hit me. After watching the plants grow extremely fast under the 600 watt MH, I'm not so sure anymore that cfl's will save more energy in the lo... Read More »
Q: How far from my plants should my 400w Metal Halide light be?
A: consistently 18 inches. Read More »
Q: T5 equvalent of 400 w Metal halide?
A: I got a good deal from Reef Geek on my TEK fixture and bulbs (Midday). Shipping was free. Lumens is a reference scale weighted for green light not the red and b... Read More »
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