Indoor lights for Growing plants

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Two Types of HID Lights

There are two categories of HID lamps: metal halide (MH) and high-pressure sodium (HPS). Both emit a much more intense light than fluorescent bulbs, which also pass electricity through a gas-filled tube.

MH bulbs emit light that's strongest at the blue end of the spectrum. It's a stark, cool white light that produces compact, leafy growth. Because the light does not distort the colors of the plants and people it illuminates, this type of plant grow light is a good choice for a light display in a living area.

Agrosun gold halide bulbs are color-corrected to give off more red/orange light than regular metal halides. This helps boost flowering in addition to supporting compact foliar growth. Halide bulbs should be replaced about once a year.

HPS bulbs last slightly longer; they should be replaced every 18 months. They emit light strong at the red/orange end of the spectrum, which promotes flowering. However, HPS lighting may also produce leggy growth unless used together with daylight or a metal halide system.

If your goal is lots of bloom, use high-pressure sodium lamps, but be advised: Their light has a red/orange cast that distorts the colors of everything they illuminate. This plant grow light is not flattering in a living room; everyone looks slightly jaundiced.

Test Garden Tip:You can use both high-pressure sodium and metal halide bulbs in a single location, but a metal halide bulb cannot be used in a high-pressure sodium fixture, and vice versa. HPS ballasts include an igniter and MH ballasts do not. If you have multiple fixtures, consider a combination of HPS and MH systems. If you have only one fixture, you can use a conversion bulb, using metal halide to promote foliage growth, then switching to a conversion high-pressure sodium bulb to encourage flowering.

High-Intensity Fluorescent Plant Grow Lights

High-intensity fluorescent bulbs are also an excellent choice. Fixtures resemble those of HID bulbs, but they are less expensive, and cool and warm bulbs are available that fit in the same ballast. Choose according to which light is more appealing to your eye.

Fluorescent Plant Lights

Grow lights for indoor potted herbs/veggies

2009-02-26 11:03:01 by windowgardener

I've been growing random herbs like Basil and veggies like Bell Peppers from seedlings. They have all sprouted and I lost a lot that simply wilted away. My next batch grew under a pair of $12 Utilitech Florescent Grow Lights from Lowe's.
They have made pretty good progress but now I am starting to see signs of wilting
again on the leaves. There could be several things wrong, but I wanna start with
making sure I am using decent grow lights. I'm in an apartment that only gets a few hours of sunlight. I hang the lights about 18 inches above the pots, 10 inches or
so above the top of the plants.
Thank you all very much!


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