Im useing my mars hydro old model 600 watt and my plants are 15 days today what would be my best height for my light at this stage I have had them at 36" from the start I want to know can I drop it down to 30" and my plants be ok this my first run with the 5w chip led I dont want to bleach them or hurt them any advice for me would be much appreciated thanks
Mars-Hydro LED Grow Light Discussion
- Thread starter Mars Hydro
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arellanobrian
Well-Known Member
plants should be fine man, I have my tops 2-6 inches away with no problems
Hi! I have the same lights and the same (minor) issue. It's not so much dust in my case, but some sort of "oily film" which appears over time which I think is coming from the thermal paste used in the lights.
NOTE this probably voids warranty:
Disconnect lights from power. (Obviously)
You open up the lights (rather easy) by unscrewing the six outer screws. Make sure the top which you remove doesn't fall down onto the PCB (board w/ heatsink and LEDs) once you unscrewed it.
After you opened the screws, carefully remove the top. It is attached to the PCB with some wires, careful.
There are four more screws where the inner PCB is attached to the bottom.
Unscrew these also, pull out the PCB. (The PCB is a little tricky to grab)
Now put the PCB (still attached to the top) on the side, like on a towel or something.
If you can, use alcohol to clean oily film etc. which can sometimes be on parts of the lights and on the aluminum heat sink. A brush or so can help too. There can be bugs too. So brush this off and use alcohol to clean.
The oil film on the glass itself (careful not to break) I find rather tricky to clean!
I use glass cleaner, alcohol, some spit etc. and a paper towel.
When it's clean, put everything together again.
Put the PCB back in, carefully. Screw it back on with the four screws.
Put the upper top of the case into the light again but hold it so it won't fall down. Tug the wires down into the housing, left & right on the side. Still hold the top in place and screw in the outer screws.
Done.
It's really easy and fast if you know the procedure.
smokehog
New Member
Dear SmokeSara, I received my mars 2 1600w back from your UK service center about 6/7 week ago. The whole board was changed as they was a fault on it. The same has happened again.
soz i did not have the email.
soz i did not have the email.
Dave Groomer
Well-Known Member
Sara will see this when she gets online later. You may want to double up and send her an email. The link is in her signature.
smokehog
New Member
Thanks mate, i amended the post as i did not have her email.
Hello everyone.
How many plants can i fit under Mars II 400w?
What yield can i expect from the plants? (Auto flower)
Would choosing a grow tent size of ...... 3' 3'' x3' 3'' x5' 11''(39''x39''x71'') or 2' 3'' x2' 3'' x5' 3''(27''x27''x63'') has any difference in terms of yield?
I live in a very hot country, in south east Asia so i thought maybe the bigger tents would be better for less heat build up in the tent, even if iam not using all the available space in the grow tent for growin
Do you guys have any thoughts?
Thanks in advance!
How many plants can i fit under Mars II 400w?
What yield can i expect from the plants? (Auto flower)
Would choosing a grow tent size of ...... 3' 3'' x3' 3'' x5' 11''(39''x39''x71'') or 2' 3'' x2' 3'' x5' 3''(27''x27''x63'') has any difference in terms of yield?
I live in a very hot country, in south east Asia so i thought maybe the bigger tents would be better for less heat build up in the tent, even if iam not using all the available space in the grow tent for growin
Do you guys have any thoughts?
Thanks in advance!
Dave Groomer
Well-Known Member
I feel that the 2'3"x2'3" tent is a perfect fit for the 400. That being said, a bigger tent will give you more room and you don't have to use the whole tent right away. I ran 2 400s in my 3'3"x3'3" veg tent before I had to take it down. I am now running a 900 in the 2x2 tent. It did generate a little bit of heat due to the small closet I have the tent in so I vented to the attic and now there is no issue. I am running 4 plants in my 2x2 and that will be tight when they are in flower but keeping them well groomed I should be fine. Good luck with your choice!!
ganjazz
Well-Known Member
Update 3rd round Mars2 700W
wow, and i'm freaking out about my 82-84f temps and 30 humidity.
You just convinced and cleared it up for me, it's perfectly fine.
beautiful grow.
so icey
You just convinced and cleared it up for me, it's perfectly fine.
beautiful grow.
so icey
Here is a 6 week update
Dave Groomer
Well-Known Member
CatfishKnight
Well-Known Member
What is your humidity super.
84 is my Ideal temp for my tent. That is what I try to keep it at.
CatfishKnight
Well-Known Member
Also with everyone growing, what is the Co2 levels in your tents or grow closets?
Outside levels are around 350 to 500 or so I've read about.
So as long as the Co2 ppm is that in your tents or grow room everything should grow okay?
Outside levels are around 350 to 500 or so I've read about.
So as long as the Co2 ppm is that in your tents or grow room everything should grow okay?
Dave Groomer
Well-Known Member
As long is it is under 50% i find it is ok. Lower humidity in flower (35-40) and it can be a bit higher in veg but it is rarely over 50%. I have never checked CO2.
arellanobrian
Well-Known Member
ya i try to keep temp between 80-84 when the lights are on and 50%-65% humidity i find fine for veg and anything below 50% for flower should be fine
CatfishKnight
Well-Known Member
Look out Nuggs!!! There is a Shadow Marijuana Monster to the left of your hand on the Wall.
It's Gonna "Smoke You!!!"
It's Gonna "Smoke You!!!"
here is my sweet train wreck auto vegging under 600 watt old model mars hydro day16
- Thread starter
- #19,878
Mars Hydro
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Woo,massive grow...
fantastic view! You will have a good result.
fantastic view! You will have a good result.Here's an update from my Mars LED SCROG, now 30 days into 12/12........almost halfway into flower. I am running 5 plants (3x Female Seeds C99, 1x Sweet Seeds Cream Caramel and 1 X Sweet Seeds Green Poison) in an ebb and flow system under a 6.3' x 3' screen. I've got 2 x MarsII 900 and 1 x Reflector 48 for a total of about 960 actual watts of Mars Hydro LEDs. So far, I'd say my plants are happier and I am further along than I have been at this point in the past using HPS. C99's are stacking up nicely, and the two indica strains both have some fat and dense bugs already. All strains are extremely frosty for only 4 weeks in. Hoping my ladies continue to pack on the weight in the coming weeks, very happy with these lights so far.
- Thread starter
- #19,879
Mars Hydro
420 Sponsor
- Thread starter
- #19,880
Mars Hydro
420 Sponsor
hi nuggs, you can lower them down to 30" and check their reaction. It should be safe height. 
The recommend height is actually 18" to 24". 
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