Another LED or a 400 watt hps?

VACAVILLE,CA.GROWER

Well-Known Member
Hello everyone. I have a small 2x2x5 tent. I was thinking of doing a 1 plant scrog. I already have a mars hydro 300w led light. I was wanting to know if I should use another mars hydro 300w light and have 2 led lights in the tent? Or just buy a 400w hps cooltube for my size tent?
 

davygee1977

Well-Known Member
Hello everyone. I have a small 2x2x5 tent. I was thinking of doing a 1 plant scrog. I already have a mars hydro 300w led light. I was wanting to know if I should use another mars hydro 300w light and have 2 led lights in the tent? Or just buy a 400w hps cooltube for my size tent?
Ul get more bud from hps
 

althor

Well-Known Member
When I read about LEDs they always say something like "as efficient as a 600watt HID" or something to that effect.

When things change to "as efficient as a 600watt LED" I will seriously start considering LED, but as of now things are still compared to the industry standard HIDs.
 

Bbcchance

Well-Known Member
I know I've had double the yield from hps that I've had from leds, but I also had more experience when I made the switch, could be the lights, could be the grower
 

VACAVILLE,CA.GROWER

Well-Known Member
2 mars hydro 300w led light are 140 real watts. So 2 would give me 280w of led. Yes 2 would fit in my tent. I was thinking they would give better coverage. The 400w hps cooltube would also fit.
 

GreenThumbsMcgee

Well-Known Member
Man, thats alot of LED light for a small space...you will get light bleaching to no end, thats for sure. idk as far as hps or led, but your definetly looking at way to much led lighting, i would think...i have bleached buds with less....
 

TigerSquad

Active Member
2 mars hydro 300w led light are 140 real watts. So 2 would give me 280w of led. Yes 2 would fit in my tent. I was thinking they would give better coverage. The 400w hps cooltube would also fit.
How cool dose the cool tube get because I'm using what ever I can get right now and its not strong enough I bought 1 red blue grow light from ace hardware and my plant responded to it the night of on side of the plants fan leaves doubbled in size. It made me realize how shirty cfls are. And I have a very small t5 florescent fixture. And a double full spec Led fixture form a hardware for 20$ but the box didn't label a watt or lumn, so my sour d plant is all fugly right now looks like a bad sciences experiment. She's fine but I want to go hps, but I'm worried my foam board grow box (22"×37"×47") will not only over expose them (white top buds) or it will melt the foam. My grow has a.c. set at 73°-77°f. So I herd about thiancool tube but, just how cool is it?
 

PURPLEB3RRYKUSH

Well-Known Member
How do your plants turn out with the 1 mars Led?
They turn out good but 1 plant always is a light hog, 3 too 4 ounce yield average,might need too add another little LED as the penatration from the 3w LEDS ain't that good for flower. Light needs too be like 30 cm too the tops in flower too get good buds, plus i need a little more coverage so i can space my plants out, at 30 cm just covers a plant and half maybe, damm leaves overlapping.here i will post a pic
 

PURPLEB3RRYKUSH

Well-Known Member
20160821_121400.jpg Day 48 Auto #1's in soiless promix only been given ph tap water at 100 ppm20160821_121331.jpg 20160821_121302.jpg 20160821_121238.jpg 20160821_121206.jpg under a Mars 300 the double panel reflector, old model light
 

Uberknot

Well-Known Member
I was thinking of 150 watt cob instead of led, do they produce alotta heat, want one in my 7x2 closet

Well I run a 4 cob at about that wattage in a 2x2x5.5 tent and room temps 71-73F inside tent 77-81F

and that's with a low CFM fan set up pulling air from bottom through a carbon filter at the top.

Probably average 8-10F from what I start at with lights on.
 
Last edited:

VACAVILLE,CA.GROWER

Well-Known Member
They turn out good but 1 plant always is a light hog, 3 too 4 ounce yield average,might need too add another little LED as the penatration from the 3w LEDS ain't that good for flower. Light needs too be like 30 cm too the tops in flower too get good buds, plus i need a little more coverage so i can space my plants out, at 30 cm just covers a plant and half maybe, damm leaves overlapping.here i will post a pic
I plan on scrogging 1 plant.
 
Top