Mephisto Genetics Sour Crack, autocobs, MegaCrop, in 1 gal airpots

[Towlie]

Nice looking plants I cut one down at day 60 she's gonna yeild around 20 grams got another 2 on day 63 now smells unreal and the buds are rock hat will follow along

 

[R_HIDIA]

Nice looking plants I cut one down at day 60 she's gonna yeild around 20 grams got another 2 on day 63 now smells unreal and the buds are rock hat will follow along

Welcome aboard.... glad to
Have you!

 

[slowandeasy]

I am a bit confused. How can 165 watts be too much for 8 sq ft?

Obviously you dont have much experience with COBS, or many other types of LEDs. Three Autocobs running 55 watts each in a 2x4 is not needed and you will have better results with 2 COBs vs 3. Watts is not what matters. Light intensity from Cobs is directed like a spotlight. You need height with Cobs to avoid the spotlight effect. Many times the nicest buds are in the "shade" when using cobs. Also, you have to look at the SHAPE of the area to be light up. Overlapping lights can cause hot spots or cold spots. I have personally used 50+ Cobs for years now to grow.
Now the other thing is TRUE WATTS vs advertised watts. If you go buy an AMAZON off brand claiming 1500 Watts, it would be wise to know that is false advertising and wont put out a fraction of that. With Autoflowering strains and Cobs running 55 watts each, 3 Cobs in a 2x4 tent will cause light stress eventually as the plants get closer to the lights. If you have a 4x4 tent, 5 Cobs is the Max needed for a 4x4 tent. Csn you try to use 3 in a 2x4? Sure it can work for veg, if the lights have enough distance. But ideal lamp distance for Cobs is 2 to 3 ft away from the top.of the plants. Most 2x4 tents are shorter than normal, many being 5ft tall. This is a key factor, as a Gorillia tent with 8ft of height would have the ability to raise the lights an extra 2 to 3 ft. In which case, you might get away without having light stress issues. Moral of the story, dont look at WATTS as your way to light up a space. Look at the shape, height, and type of lights u are using. I have a 6 light strip Samsung light it is perectly shapped and sized for a 2x4 tent. It adjusts to 185 watts MAX. The lighting is wall to wall and even as can be. Lamp distance matters a ton. If my plants are 12 inches away from tbe light, 185 Watts would be too much...and lowering the intensity would be a requirement to avoid light stress. Turning the light down to 50% or Approx 90 Watts would allow you to keep the light 12 inches away without stress. But ramp it up to 100% and that plant will turn yellow and sad within 2 days. Read your plants more than anything. Dont ASSUME lights WATTS are a safety measure or valid number to trust when choosing a light for a perticular space. The same light in a 9sqft SQUARE Tent will not light up a 2x4 tent the same, especially if at different heights. That is why you are seeing different light shapes these days, tailoring the shape of the ligjt to suit the shape of the tents. Good luck, read your plants and dont assume MORE is always better. Peace, slow

 

[jdm61]

No I do not have any experience with CoB’s. I do, however, currently own a 130 W 288 Rspec QB. As such, I am familiar with LEDs to some extent and also the concept of true watts versus whatever someone wants to claim on Amazon. I’m just wondering why you feel that at 110 W is sufficient and 165 way too much for a tent that most of the people who make them tell you will be better served with at least a real 240 W? 110 W in an 8 ft.² tent is what? Less than 14 W per square foot?

 

[R_HIDIA]

No I do not have any experience with CoB’s. I do, however, currently own a 130 W 288 Rspec QB. As such, I am familiar with LEDs to some extent and also the concept of true watts versus whatever someone wants to claim on Amazon. I’m just wondering why you feel that at 110 W is sufficient and 165 way too much for a tent that most of the people who make them tell you will be better served with at least a real 240 W? 110 W in an 8 ft.² tent is what? Less than 14 W per square foot?

I was initially going to chime in but I figured @slowandeasy would be by to explain it better than I ever could. Earlier in the thread we touched on the fact that my 2x4 was a 6footer and not 5 or 5’3. I actually have a 240W “QB” on the way for a new 2x4. I don’t think I’ll ever have it dialed up to max but we’ll see. As slow stated about autos needing less light- I don’t know if there are any studies that prove this, but anecdotally I do find that to indeed be the case. I commonly run 3 autocobs in my tent but come flower time they’re not even being hung from the ratchet hangers- I’m always zip tying them through the loop and directly to the roof rails as those de inches are precious for me. So far the only 2x4x6 tent I can find on amazon right now is from a company that might be temporarily shutdown due to covid 19 as my friend ordered one with Prime shipping 10 days ago and it’s showing it might be delivered May 11-15... Mars Hydro has one that is 5’10 but is 189 Cdn compare to i think 119.00 for the other big I have to I’ll grab the mars...

 

[hope2grow]

Thank you my friend. So glad to have you around for the ride. If I’m not mistaken are you using the 1 litre airpots? I think I might’ve stumbled across your grow when I was looking at parsing trees’ grows. Also I should add this... I did something that isn’t going to help. My 5x5 was wayyyy too tight so I brought a Double Grape into the 2x4 with the sour cracks. Not ideal but better than the alternative

Absolutely M8.. squeeze her in there.. I use 3L airpots growing perpetual.. they're perfect for my little tent.. assume your in the US.. gallons/litres lol link to my grow for a nosey if ya like.. https://www.autoflower.org/threads/hopes-perpetual-skyline-500w-grow.67314/

 

[slowandeasy]

No I do not have any experience with CoB’s. I do, however, currently own a 130 W 288 Rspec QB. As such, I am familiar with LEDs to some extent and also the concept of true watts versus whatever someone wants to claim on Amazon. I’m just wondering why you feel that at 110 W is sufficient and 165 way too much for a tent that most of the people who make them tell you will be better served with at least a real 240 W? 110 W in an 8 ft.² tent is what? Less than 14 W per square foot?

From my Vast experience I can tell you that your plants will tell you what is too much light more than your eyes or a meter will. I can tell u that If you deal with Cobs, in a 2x4 tent that 3 is not better than 2 and 3 is too much due the the intensity that Cobs produce. It is a Spotlight effect and you will cause light stress in a 2x4 with 3 Cobs due to lack of height and light intensity focused downward. Autos dont need as much light as people think. You have to take tent height into consideration. My Samsung light bars are 185 watts max. My Roc it Fuel showed signs of light stress at 75% intensity. It is happiest at 50%. Efficeiecy of light, spectrum, lamp.distsnce, tent size, strain, pheno, all are more important than WATTS. I could buy a POS "300 Watt" light and it be a fraction of the intensity of 1 Cob at 55 Watts. I can grow a plant from seed to harvest under 1 55 watt COB and yield more than that "300 Watt" light. Math means nothing. Read your plants and dont get caught up in numbers. If you think more power is better, cool man...unfortunately there are way more factors that come into play than watts. You can easily do 2g per Watt, if you use the correct lighting for your space and plants. There is such a thing as too much lighting, and with most Autoflowers and LEDs...you would be surprised at how little the amount of light your plants need to have superior yeilds. Tent shape, size and height matter a lot more than you think..a light in a 2x4x5ft height will have a different intensity in different locations than in a 3x3 at 8ft height. You notice some new LED lights are long and narrow? Perfect for a rectangular tent. Same light comes in a square version for square tents. Both 250 watts. Which is better? Watts mean nothing. Good luck, slow

 

[jdm61]

So is part of the problem with some of these COB lights that they don’t have the lenses that say the Optic 1 version does?

 

[R_HIDIA]

Absolutely M8.. squeeze her in there.. I use 3L airpots growing perpetual.. they're perfect for my little tent.. assume your in the US.. gallons/litres lol link to my grow for a nosey if ya like.. https://www.autoflower.org/threads/hopes-perpetual-skyline-500w-grow.67314/

Thanks for the link, I’ll be sure to pop by! I’m going to assume that’s the size I’m using. Lol. I just heard someone call it a 1 gal once and assumed he was right! Lol

 

[gringuito98]

From my Vast experience I can tell you that your plants will tell you what is too much light more than your eyes or a meter will. I can tell u that If you deal with Cobs, in a 2x4 tent that 3 is not better than 2 and 3 is too much due the the intensity that Cobs produce. It is a Spotlight effect and you will cause light stress in a 2x4 with 3 Cobs due to lack of height and light intensity focused downward. Autos dont need as much light as people think. You have to take tent height into consideration. My Samsung light bars are 185 watts max. My Roc it Fuel showed signs of light stress at 75% intensity. It is happiest at 50%. Efficeiecy of light, spectrum, lamp.distsnce, tent size, strain, pheno, all are more important than WATTS. I could buy a POS "300 Watt" light and it be a fraction of the intensity of 1 Cob at 55 Watts. I can grow a plant from seed to harvest under 1 55 watt COB and yield more than that "300 Watt" light. Math means nothing. Read your plants and dont get caught up in numbers. If you think more power is better, cool man...unfortunately there are way more factors that come into play than watts. You can easily do 2g per Watt, if you use the correct lighting for your space and plants. There is such a thing as too much lighting, and with most Autoflowers and LEDs...you would be surprised at how little the amount of light your plants need to have superior yeilds. Tent shape, size and height matter a lot more than you think..a light in a 2x4x5ft height will have a different intensity in different locations than in a 3x3 at 8ft height. You notice some new LED lights are long and narrow? Perfect for a rectangular tent. Same light comes in a square version for square tents. Both 250 watts. Which is better? Watts mean nothing. Good luck, slow

I confirm what @slowandeasy is trying to explain to you and I know it from experience. Cobs have to be placed at a certain distance from each other. If you hang them too close, you‘re creating hotspots in the overlapping area ... with other words: intensity of light will be higher between the lights than right under them... and it’s tricky to deal with it. In my experience, 50W Cobs should have at least a distance of 16in between each other or -having enough height- you can use 3 Cobs with lenses (1/plant) in order to reduce their footprint/overlapping.
Good luck and happy growing!