Does the 6 give off too much heat vs the 8 in hood bc I put my lights pretty close to my plants
396500
you have to connect the ventilation fan on the last lightsystem hood(6inch or 8inch whatever) to exhaust the heat to the outside. you can find ventilation fan on the amazon.com as you know.
2176387
We use 600 watt bulb and have problem with heat. Open up tents each morning to reduce the heat build up. Use a glass enclosed reflector with outside air moving through the reflector back outside and still have a heat problem. So depends on room size and fan size to remove excess heat..
188001
LEDs are 80-90% efficient (80-90% of the input energy is converted to light, the rest is heat). 20% of 10w is only 2w, which would not get an enclosed area very warm, so I question the worries over heating, but the manufacturer knows more than me. If you have 3+ light sin ana enclosure, I suppose the 3-6w or more of heat could warm up the air a bit. You coudl always give it a try and do a test. Run the lights for an hour and then quickly take apart the fixture/globe, turn the lights off, and finally feel how warm they are. Compare that test/temperature with another bulb running for an hour but not in an enclosed fixture. LEDs are 80-90% efficient (80-90% of the input energy is converted to light, the rest is heat). 20% of 10w is only 2w, which would not get an enclosed area very warm, so I question the worries over heating, but the manufacturer knows more than me. If you have 3+ light sin ana enclosure, I suppose the 3-6w or more of heat could warm up the air a bit. You coudl always give it a try and do a test. Run the lights for an hour and then quickly take apart the fixture/globe, turn the lights off, and finally feel how warm they are. Compare that test/temperature with another bulb running for an hour... » Read More LEDs are 80-90% efficient (80-90% of the input energy is converted to light, the rest is heat). 20% of 10w is only 2w, which would not get an enclosed area very warm, so I question the worries over heating, but the manufacturer knows more than me. If you have 3+ light sin ana enclosure, I suppose the 3-6w or more of heat could warm up the air a bit. You coudl always give it a try and do a test. Run the lights for an hour and then quickly take apart the fixture/globe, turn the lights off, and finally feel how warm they are. Compare that test/temperature with another bulb running for an hour but not in an enclosed fixture. « Show Less
516580
Yes def....no worries produces a lot of light even with 40 watt bulbs....also gives off a lot of heat
815878
I believe so. The double hood or shields are meant to maximize light without creating heat on the top of the lamp. In other words the primary shield is for intense light and the second hood is to keep you from burning yourself. My dad loves his lights and they have helped tremendously.
1524818
The heat they put out is so minimal, plants can nearly touch the bulbs and not be cooked. I have both two bulb units and one of these. This one is BY FAR my favorite. Most of my seedlings are in flats. Using the two bulb units, with the flat turned lengthwise under the lights . . .the plants on both long edges for about two rows on each side for a total of four long rows . . .the seedlings become slightly more leggy than those seedlings closer to the middle. The reason why is the distance from the lights. Using the four bulb unit, all the seedlings get the same amount of light.
1524817
The heat they put out is so minimal, plants can nearly touch the bulbs and not be cooked. I have both two bulb units and one of these. This one is BY FAR my favorite. Most of my seedlings are in flats. Using the two bulb units, with the flat turned lengthwise under the lights . . .the plants on both long edges for about two rows on each side for a total of four long rows . . .the seedlings become slightly more leggy than those seedlings closer to the middle. The reason why is the distance from the lights. Using the four bulb unit, all the seedlings get the same amount of light. The heat they put out is so minimal, plants can nearly touch the bulbs and not be cooked. I have both two bulb units and one of these. This one is BY FAR my favorite. Most of my seedlings are in flats. Using the two bulb units, with the flat turned lengthwise under the lights . . .the plants on both long edges for about two rows on each side for a total of four long rows . . .the seedlings become slightly more leggy than those seedlings closer to the middle. The reason why is the distance from the lights. Using the four bulb unit, all the seedlings get the same amount of light.
589935
No these lights run cool . You can almost handle them on during installation if you are attempting to determine the right position.
777265
It says right on the neck of the fixture NOT FOR USE IN ENCLOSED LUMINARY. Many commentators stress how little heat comes from these bulbs. That is true on the lighted side. The backside or the side in the enclosed can is another matter. If you feel the backside cooling fins you'll soon realize that plenty of heat is generated, so much so that inside an enclosed can they'd be too hot to touch. That is undoubtedly the reason for the disclosure stated in the first sentence. What is at issue is the build up of heat. Will it trip the cutout? Will it affect the electronics that make the LED function? I have these same lights in enclosed cans in my house. For years I had halogen in the same cans. The cans are rated for insulation coverage. At the very least I'd expect a drop in life expectancy. It'd be nice to have a little vent in the can to vent the heat.
2108708
Let's start out here and say I am not a lighting specialist. But, I have several of these lamps around my home and if it is heat from the lamp that is bothering you this is no problem, as they seem to all run cooler then incandescent lamps. I think you will find the Phillips lamp is much freighter then the one than a 60 watt it will be replacing. I was surprised that amount of light produced fem the bulbs. I am slowly replacing all my flood lamps with these lamps in my home!
777460
With LEDs you can't really translate lumens. I used the light with pretty good results. You want an open area, as to trap the heat released by the lights side exhaust. The light itself doesn't cause much heat, but the fan exhaust do!
2057869
It's best to have too much than too little air movement. Not knowing how many lights you have (say 5 600w) with this set up I would go for at least an 8 inch duct fan. Also, get a brand name - they last forever. Hope you get it going :)
410134
If you are using the same wattage you shouldn't have a problem. I have replaced my hoods before. Never seemed to have a problem.
2104664
As far as I can tell, the only difference between the two is the difference in Wattage. So based on my experience with the 8.1 watt bulbs, I am assuming the 6 watt bulbs should also work fine.
984760
I haven't had any problems. It does tend to be warmer but it works great for plants and lights the tank very well.
1097715
That is completely up to you. If you are planning on getting a longer tank, I would go with the 24-36". Also, with the 18-24", you will have 3" on both sides of the tank that will rely on light refraction and light angle to get light. In my personal opinion, get the 24-36". This way the tank will get the most light and help the plants.
1524814
Well, the 4 lights give out twice as much light and enable you to grow plants on a deeper shelf. I really like this light, and last year my seedlings grew better under these lamps than under my 2 light lamps. I didn't find them to put out too much heat, but they do give some warmth, which is good. I made an L-shape growing area with 2 sets of shelves. I put up 2 four-feet lamps on several shelves, and this lamp on the shorter side.