Mars-Hydro LED Grow Light Discussion

[Mars Hydro]

Thank you Deville Had a wonderful holiday with my family haha.
Lucy and my other colleagues really thank you for your asking

I agree Enjoy your holiday Vera. You deserve it. Say hello to Lucy and the others from the North-Pole

 

[Mars Hydro]

Hi Deville, There is no rush, you can send the broken drivers when you are ready, our tech want to figure out why the drivers often went wrong, so we can make changes and avoid that.

I won't recommend Mars Pro II 320 in 70cmx70cm grow tent, it is too much light.

I repaired my spare 320 yesterday. Tell Lucy I will send the broken power supplies as soon as I can afford the postage It was a heavy month this time with a lot of bills, and it's 6 power supplies, so it's a heavy package. Guess it's no rush though to figure out what went wrong with them. I promise I will send them as soon as I can - within a couple of weeks.

I do have a question - I friend of mine is in desperate need of a lamp and I do have more lamps than I am using. Because at the level I am growing, you need to always have at least one spare lamp. I have learned that the hard way. But I am over the critical phase of this grow. I doubt something more can go wrong. I mean - I changed so many parts in these lamps, they're as good as new now. So I feel pretty safe loaning away one lamp.

So to the question - I am considering to allow my friend to borrow my Mars Pro Epistar 160 as that would fit perfectly in his very tiny closet. But that also means I would have to put my spare 320 to use while my friend is saving up money for his own lamp. This tent is 70x70x160 - I have a feeling that 800 watt is too much for that tent. Do you think a 320 will work in this tent or will I fry my plants? Not sure I can increase yields much either in such a tiny tent.

I could let him borrow the 320 instead, but I have a feeling we won't be able to fit it in his locker.


So any thoughts?

 

[Mars Hydro]

Great minds think alike hahaha

That's what I was thinking as well.

 

[Mars Hydro]

Only few days haven't see her, she grown so fast. Keep your great work

Tomorrow will be 1 week into flower 7 weeks since i planted the seed. I added my nute jugs as a comparison in this one.

 

[Mars Hydro]

Nice shot, the plants are lush, they have beautiful leaves

Theres a mars shinning through

 

[Mars Hydro]

How is the twin sister BM? nice pistil on the NL.

A Mars-Hydro Reflector 96 is shining on these buds on a Northern Light. Day 55 from germination.

 

[Mars Hydro]

She is crazy, you had supercropping her?

Ak47 under the 144x5 for 10 weeks. She gets chopped tomorrow. Pics will follow.
.

 

[Mars Hydro]

Sounds really reasonable green blue and red will help plants grow better.

Im reading a somewhat old scientific report that may explain why cob seems to be more efficient than blurple.

Anyone knows about never research than this one from 2009? There are many things indicating that the NASA spectrum we mostly use today is slightly outdated


Abstract

The literature and our present examinations indicate that the intra-leaf light absorption profile is in most cases steeper than the photosynthetic capacity profile. In strong white light, therefore, the quantum yield of photosynthesis would be lower in the upper chloroplasts, located near the illuminated surface, than that in the lower chloroplasts. Because green light can penetrate further into the leaf than red or blue light, in strong white light, any additional green light absorbed by the lower chloroplasts would increase leaf photosynthesis to a greater extent than would additional red or blue light. Based on the assessment of effects of the additional monochromatic light on leaf photosynthesis, we developed the differential quantum yield method that quantifies efficiency of any monochromatic light in white light. Application of this method to sunflower leaves clearly showed that, in moderate to strong white light, green light drove photosynthesis more effectively than red light. The green leaf should have a considerable volume of chloroplasts to accommodate the inefficient carboxylation enzyme, Rubisco, and deliver appropriate light to all the chloroplasts. By using chlorophylls that absorb green light weakly, modifying mesophyll structure and adjusting the Rubisco/chlorophyll ratio, the leaf appears to satisfy two somewhat conflicting requirements: to increase the absorptance of photosynthetically active radiation, and to drive photosynthesis efficiently in all the chloroplasts. We also discuss some serious problems that are caused by neglecting these intra-leaf profiles when estimating whole leaf electron transport rates and assessing photoinhibition by fluorescence techniques.

 

[Celiac420]

Hey Sara can you message me privately?

 

[Mars Hydro]

Hi Celiac, Sorry I can't send private message to you, only posts over 50 can receive or send private message. you can email us info@mars-hydro.com.

Hey Sara can you message me privately?

 

[Skullman420]

Actually the 320 seem to work in the 3x3 tent Vera. It didn't get to hot. I have a very big exhaust fan.

But i must admit flowering will be scary. It's a lot light in such a small space. Let's think of it as an experiment. This grow space is not important. It's just mother plants to get me my 32 clones for the big grow in November.

It's nice to have room for experimentation. It is only two of my grow spaces i see as important. Main room and the big mars hydro tent. That's my factories. The other 4 spaces are for fun and experiments

 

[Skullman420]

Hi Deville, There is no rush, you can send the broken drivers when you are ready, our tech want to figure out why the drivers often went wrong, so we can make changes and avoid that.

I won't recommend Mars Pro II 320 in 70cmx70cm grow tent, it is too much light.

I know. I really appreciate that mars hydro takes the time to try to find out what went wrong with my power supplies. It's great how willing you are to go through these things to improve your products.

I find it strange it's always the power suppliers for the blue sections. Because the power suppliers for the red sections seem to be identical

 

[Celiac420]

What type of yield is everyone getting with the epistar 320 in a 4x4 area scrog in dwc? I know genetics, nutes, ph all play a huge roll in the outcome, just looking for a rough number. I average .8gpw just LST with 600hps lights so just a little curious. Never ran a scrog before but interested in starting to use leds and it seems this is the best way to maximize yield with LEDs

 

[Dave Groomer]

What type of yield is everyone getting with the epistar 320 in a 4x4 area scrog in dwc? I know genetics, nutes, ph all play a huge roll in the outcome, just looking for a rough number. I average .8gpw just LST with 600hps lights so just a little curious. Never ran a scrog before but interested in starting to use leds and it seems this is the best way to maximize yield with LEDs

With a perpetual garden, 4 plants in flower at a time 2 weeks apart, I was getting 3-4oz every 2 weeks with a Mars 900. I just up graded to the 320. It has been about 2 weeks and buds are looking bigger and frostier. Give me another 4-6 weeks to see how the girls start performing under the new lights.

 

[Celiac420]

With a perpetual garden, 4 plants in flower at a time 2 weeks apart, I was getting 3-4oz every 2 weeks with a Mars 900. I just up graded to the 320. It has been about 2 weeks and buds are looking bigger and frostier. Give me another 4-6 weeks to see how the girls start performing under the new lights.

Thanks man

 

[Dave Groomer]

Thanks man

 

[Skullman420]

anything from 400-900 grams depending on strain, skillset, training methods and so on I would guess. Used to get 300-350 from my 160 in hydro without being especially experienced.

 

[Celiac420]

anything from 400-900 grams depending on strain, skillset, training methods and so on I would guess. Used to get 300-350 from my 160 in hydro without being especially experienced.

Thanks for the numbers. I've been at it for close to 10years and have some good experience, just never used leds and sick of hps. Btw I love your journals man, you're one of the mai reasons I've decided to go with mars. Also COfinest videos have made me want to switch for a while now. Any tips you recommend when switching that differs from the usual hps grows?

 

[Skullman420]

I was in a tiny apartment back when I used HPS and I put together a setup that was kinda doomed to fail. You could say that Mars saved my day. My poor plants got fried in there and looked so sad.

I don't think the way you do things is much different. It's just another type of light. I noticed quite a difference in bud density though. The buds got rock hard and I used to get kinda fluffy buds. The plants also looked much happier. But I switched to LED about the same time my experience level started to get quite ok, so I don't have "real" experience with HPS. I was still learning back when I used that. I also had severe heat issues - the Mars light fixed that problem instantly.

Just keep them around 40cm above the canopy and you'll be fine. I really love my pro and pro II's

I am starting to like the COB as well very very much. I am strongly considering to buy more of those - So far it seems to perform better than you would expect based on the specs they have listed on their webpage. I am expecting to see those numbers perhaps change in the future as yield numbers start coming in. It covers surprisingly well and the intensity is quite good even outside the core area and it doesn't change much as you raise the lamp either.

Thanks for the numbers. I've been at it for close to 10years and have some good experience, just never used leds and sick of hps. Btw I love your journals man, you're one of the mai reasons I've decided to go with mars. Also COfinest videos have made me want to switch for a while now. Any tips you recommend when switching that differs from the usual hps grows?

 

[Ian Bastage]

Sara

As promised, I am finally starting my build. A little late I know (health) but finally happening. The Mars tent is very good quality & easy to put together (if you bother to look at the directions). It is thick enough that I don't have to worry about tears etc as I throw it around. The Epistar 160 seems to light up the 2x4 space very spectacularly. So all is well!

I am working on the plumbing but I hope to start my seeds this weekend.