Lighting LEDs direct from china

[Pops]

You are going to rock your 10X20 grow space with that many watts. Look what galaxy hydro just started to sellhttp://www.ebay.com/itm/PopularGrow-400W-COB-LED-Grow-Light-Full-Spectrum-For-Plant-Growth-Bloom-Lamp-/322012646958?hash=item4af9730e2e:g:7SgAAOSwll1WxnOS. They are feeling the pinch of the top bin manufacturers so much they try to emulate cree

I have that led lite and i love it. Have had it almost a year. I use it with my 400 watt Hps and its 400 watt to.My girls soak it up.

 

[BigSm0]

Thanks man that is what I wanted to hear! I am going to be using them in my greenhouse so I will be using natural sun half the time and CMH the other half, so hopefully the 7800ft elevation sunshine will make up for any def in flower. Also can you use the 3100k for veg and flower?

They also sell a commercial version that's perfect for greenhouses. They have a smaller reflector which blocks less sun during the day time.

 

[BigSm0]

Watt per watt seems that LED are better than HPS (better spectrum), isn't that right? LED also cut down electricy bill what's important to me.
So what do you recommend?

What I think you mean is watt per claimed watt. If it's watt per watt most LEDs aren't providing the same amount of light to the plants unless they have higher efficiency. Mars being 20+-% efficient vs a hps that's 20+-% efficient it takes the same wall wattage to equal the same amount of light. If a led light was 40% efficient then you could indeed have less wall wattage to equal the same amount of light. With energy concerns the most important factor when deciding on a light is the efficiency. That's where you can save. Cree 3070 cobs are in the high 40% range. 3590's are in the mid to upper 50% range. Brigelux and epistsr which is found in most cheaper led lights are in the low 20% range.

 

[BigSm0]

I have that led lite and i love it. Have had it almost a year. I use it with my 400 watt Hps and its 400 watt to.My girls soak it up.

Have you compared it to another setup or just used this. It's great to see good success with lighting especially less expensive setups. But most people who grow under a cheaper light never try anything else before stating the results. The grow result could be more from your skill or setup more than the light and if it came down to you using a "real" light could actualky increase yields tremendously.

I hate to come off as a light expert or a know it all but I have been following this for along time. Liking a light isn't like liking a color. Lighting and it's efficiency is what saves people money. Led doesn't save anything unless it's better than what your comparing it to. You may like a light cause if it's design or appearance but the fact is the lights there to grow and what's inside is what makes the most impact.

To prove all this mumbo jumbo people have excellent results from light emitting ceramics lec and that's because they are 42% efficient. Double what a cheaper epistar light gives. So for every 2 watts of Mars you can get the same results from 1 watt of a Lec. That's savings. Or a Cree diode or cob running at 50% efficient vs again an epistsr at 20% efficient. But hps to led as a general term isn't saving anything.

 

[F.N.]

I have that led lite and i love it. Have had it almost a year. I use it with my 400 watt Hps and its 400 watt to.My girls soak it up.

That is good to hear I am glad you are happy with your purchase. I just got a 400 watt 150 Canadian shipped in three days from right here in good ole Canada they have a distribution centre here now. You should make the full switch and buy another 400 watt LED bro just saying. But if you Combo is working great no sense in messing with it. I think that Galaxy hydro are an excellent company to deal with for people who have skills on growing already. One day when I can afford to drop anymore then 200 at a time. Why general life expenses raising grandchildren paying a shit ton of bills every month. This is led lights direct from china thread. Lets all hope we can drop the money it takes for high end leds one day. But for now my Galaxy hydro will have to do and do they will lol

 

[KonopCh]

What I think you mean is watt per claimed watt. If it's watt per watt most LEDs aren't providing the same amount of light to the plants unless they have higher efficiency. Mars being 20+-% efficient vs a hps that's 20+-% efficient it takes the same wall wattage to equal the same amount of light. If a led light was 40% efficient then you could indeed have less wall wattage to equal the same amount of light. With energy concerns the most important factor when deciding on a light is the efficiency. That's where you can save. Cree 3070 cobs are in the high 40% range. 3590's are in the mid to upper 50% range. Brigelux and epistsr which is found in most cheaper led lights are in the low 20% range.

I mean watt per actual watt draw (LED). I don't trully understand this post, sorry, I am not from USA/UK. Also if I write something wrong, I didn't mean nothing rude - it's great forum with brilliant people who help each other.

I think in this way, please correct me if I am wrong... Comparing 250W HPS and 250W actual draw LED. LED will give me better light spectrum, so more usable energy for plants than HPS. This means bigger yield, right? This also mean LEDs are more efficient. Also LED will give me less on electricy bill, because I can turn off my exhaus and intake fan (both using 100W) and magnetic ballast for HPS (which draw around 50W I think). Plus, heat will be smaller.

 

[BigSm0]

Led can be better if its an efficient panel. But most less expensive LEDs aren't more efficient. Efficiency is photons to heat ratio. Most hps are 20% photons to 80% heat. Most Cree cobs or Cree diodes are 40-60% photons to heat. That's where you can save. Panels like Mars hydro and kind are the same as hps. 20-30% photons to heat. So basically if you have a 20% efficient hps against a 20% efficient led the heat and light will be exactly the same.

Where people think led saves is they go off of the claimed wattage. A Mars 600 that draws 260 watts at the wall. One room Mars 600 and one room 600w hps the Mars will be absolutely cooler because it's only drawing 260w but the par watts on the Mars is closer to 60 and the hps par watts are closer to 120 so to equal the same light you would need 2 Mars to equal the one hps putting heat and light output the same.

 

[diskokobaja]

i think you are waaay off.. my chinesse pimped light doesnt make heat at all, hes case is at 26c, and he raises maybe 1c tent temp.. But my new tgl 60 without pc cooler get pretty hot and raises tent temp by 3c...

 

[BigSm0]

I don't make this stuff up it's physics. If the wattage is different than the heat will be different

 

[diskokobaja]

tgl is 55w cob, and photon 6 is 240w from the wall