What is a cool tube?

A Cool Tube is basically a glass tube with a light bulb connector within it. Both extremities are opened allowing you to place extracting tubes in them in order to connect the extractor and air filter if needed.

Simply so, are Cool tubes any good?

another good thing about cool tubes . you can buy them of ebay for 60 dollars us and they are good for placing in the center of a tomato cage and placing plants around them and grow that way or you can also put a light on top to to get max yields .

One may also ask, can you veg with HPS? and you can absolutely veg under HPS and you'll get lots of growth, but the downside is you'll get taller, stretchy plants with lots of distance between the nodes so you end up with lots of smaller buds spread over a lankier plant rather than fewer, larger buds because, being shorter and bushier, the buds grow together

In respect to this, do cool tubes reduce light?

Cool tubes can have their place in horizontal grows, IMO, because they allow you to get the lamp closer to the plants without burning them - thus increasing yields (offsetting the small reduction in light that is filtered by the extra layer of glass).

How do air cooled grow lights work?

The whole point of air-cooled reflectors is to remove the excess heat generated from your HID high pressure sodium, metal halide, or dual spectrum lamps at source. Insulated ducting allows more of that heat to be channeled away, out of your grow room, without it simply leaking back through uninsulated ducting.

How much heat do LED grow lights produce?

The short answer is LED grow lights will heat up your grow area 40% less than HID lights drawing the same wattage. And more specifically: according to the manufacturer Advanced LED, LED bulbs emit only around 107°F, compared to incandescent bulbs at 327°F, and compact fluorescents (CFL) at 167°F.

How long does it take a HPS light to turn on?

It is not possible to instantly ignite a cold HPS lamp to full brilliance. As power is applied, temperature and pressure build gradually, causing metal vapors to enter into the arc and release light energy. Starting the arc sometimes takes a few seconds, and the warm-up period is generally about four minutes.

How do you cool a grow box?

To keep your grow box warm in the winter, here are some ideas.

Run your lights during the coolest part of the day for free heat.
Insulate the outside of the grow box so it retains as much heat as possible when the lights are out.
Do what you can to keep the garage from getting to cold.

What's better HPS or Metal Halide?

HPS is about twice as electrically efficient as metal halide. Photosynthetically Active Radiation (PAR) is what really matters to plant growth, and delivery of usable PAR is better with HPS than metal halide. Metal halides deliver, on average, about 80,000-110,000 lumens per standard 1,000-watt bulb.

What light is best for vegetative growth?

Compact fluorescent bulbs are available in warm/red (2700 K), full spectrum or daylight (5000 K) and cool/blue (6500 K) versions. Warm red spectrum is recommended for flowering, and cool blue spectrum is recommended for vegetative growth. Usable life span for compact fluorescent grow lights is about 10,000 hours.

How high should my HPS light be?

HPS lights should not be placed inches from the plants, as you would place fluorescent lights; you should set HPS lamps higher, generally between 5 and 8 feet from the plants. Whether you have a reflector with your HPS light makes a difference for how close you can keep it from the plants.

How long should a fan be on in a grow room?

You can have them on constantly or on 15 minute cycles. If you have a humid grow, we recommend having the fan on constantly, and for dry areas 15 minute cycles are much better. Although fans can be extremely helpful in some areas, they do have some downsides.

Is HPS hotter than MH?

MH IS hotter than HPS. CFL's (up to a point) are cooler than HPS.

How do I control the temperature in my grow room?

To keep your temperature, humidity and CO₂ levels under control, you extract stale air and draw fresh air in. You'll probably need a heater in winter. In summer, you'll need to extract more air, but be warned, your grow room can never be cooler than the air you're drawing in, if you rely solely on air exchange.