Mars-Hydro LED Grow Light Discussion

[Mars Hydro]

it will work, Stoney, wait for the result in two weeks.

Thanks for the reply I am new and trying to learn as much as I can. I have a 400 watt HPS that I run next to my new 60x5w 300 watt Mars led in a grow a tent 38x38x79. The HPS is about 12 inch away and the led is about 10. They have about 2 weeks left. I got the led like 7 days ago so I hope I got it in time to help





QUOTE=LEDBud;2611891]I was thinking with the glass removed the unit would run cooler although my panels do not have a heat problem. If the glass was removed and they were left exposed to the elements the LED chips would eventually get coated in dust and mist. That will reduce the light transmittance to a measurable level. The glass must pass about 99.9999999999 % of the light now. I say that as reflectors for flashlights are advertised as having 98.3% light transmittance.

[/QUOTE]

 

[Mars Hydro]

that's truly exciting to know, thank you lexblaze.

2.5 years and my old 3w reflectors are still going good has survived many Australian summers where the temps have hit over 104f+

 

[Mars Hydro]

haha, yes it is.

Sounds promising - but bear in mind the 3w will run a bit cooler than the 5w series at any point in time.

 

[bobsmith]

Thanks again for your help supergroomer just ordered two of the 48x3's then.

 

[UncleCannabis]

Hey there 420 friends and fellow Mars-Hydro users. I just moved my Girl Scout Cookies mother into my flowering tent and will be flowering her out under Mars-Hydro LED's.
After tying her down she's 44" wide so this should be both fun and challenging as I'm sure she's going to be trying to push my lights up through the ceiling of my tent.

We'll see how she likes her new pot and the LED's.
I'll try to remember to post an update or 2 as things progress. This should be fun.

In the meantime, take care and keep your plants green and your headlights shining red!

 

[Mars Hydro]

great job, Uncle, time to waiting for another harvest.

Hey there 420 friends and fellow Mars-Hydro users. I just moved my Girl Scout Cookies mother into my flowering tent and will be flowering her out under Mars-Hydro LED's.
After tying her down she's 44" wide so this should be both fun and challenging as I'm sure she's going to be trying to push my lights up through the ceiling of my tent.

We'll see how she likes her new pot and the LED's.
I'll try to remember to post an update or 2 as things progress. This should be fun.

In the meantime, take care and keep your plants green and your headlights shining red!

 

[cali88]

I do not know what to buy , I'm confused . Is it enough for me to bloom ? X2 1200w to tent 120X240X200 CM

 

[LEDBud]

That sounds good for your 4x8 space.
My reasons is the light formula used for for led's is 30-50w per sq ft 50w being more desirable and used for flowering in my opinion.

The 1200w Mars II panels consume about 600w each 1200w divided by the 4x8 floor space works out to 37w per sq ft

Two 1600w panels in that space works out 50w a sq ft


I believe they actually tell you that HID lights do well under 50w a sq ft and LED's do well under 30w a sq ft.

Many people like to use 50w a sq ft for leds in flower to maximize speed and size but 37w a sq ft is still very good for LED's.


If your plants are away from the sides of the tent by 15cm on all four sides the 1200w panels would be outputting more like 42w per sq ft in the reduced space.

 

[cali88]

So you advise me to buy 1600w ? or 1200W will do great job

 

[Dave Groomer]

So you advise me to buy 1600w ? or 1200W will do great job

LEDbud is correct. 2 1200s will work fine. 2 1600s will work better. If you can afford 2 1600s, I would do that.

 

[LEDBud]

Full tilt bogey would be with the 1600w panels

Some energy savings could be had by using the 1200w panels.

Once again 6 in one hand half dozen in the other.

Supergrower uses 50w a sq ft his advice is solid.
I use 50w a sq ft and Im in grow.

 

[cali88]

whats more hotter ? x2 1600w or x2 600 hps ?

 

[LEDBud]

Thats a good question I think the 1600w/800w draw leds output the same heat as a 600w HID light its just not coming from the the bulb its coming off the back of the panel on LED's and is less of a threat to your plants.

I read that LED's are 20% cooler but do not have bulb heat per say.

 

[cali88]

How do you advise me to cool the back of the LED ?

 

[LEDBud]

they come with heat sinks and internal fans.

You need to provide adequate exhaust and fresh air intake

 

[cali88]

Conditioner will be good ?

 

[LEDBud]

there is a formula to size the fans needed to accomplish good cooling. some websites have a converter to punch in your room size and find the required CFM fan.

Do a quick Internet search I am sure you will find it fast.

 

[cali88]

What to write on Google ?

 

[LEDBud]

You will always need fresh air but air conditioning will work great for heat control

 

[LEDBud]

Yes do a goggle search for *CFM fan size calculator*