Highest yield 4x8 space

Apalchen said:
Do you have a grow journal I'd like to see how the lights do as I was thinking of trying a couple of them. I was surprised to see someone using them already.
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I been waitinf to pull the trigger no grow journal but here is a pic of them when i first put then under the lights vegged them for 10 days or so under them because my room was full upstairs and this room wasnt fully done at the time ill post as i go though
 

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Bluecollarbudz90 said:
1 800 gph feed pump out of a 55 gallon food grade barrel to top feeding 9 inch rings through half inch line on 8 separate ball valves one per pot to always balance the feed out between them. The return is a 345 gph set for 1 hour the 800 gph set for 30 mins valve shut a quarter way
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I mean the rings you use, where can i buy?
 
mauricem00 said:
been looking into UVA and found this https://www.frontiersin.org/articles/10.3389/fpls.2019.01563/full seems 90% of the benefit only requires 4% UVA. I know UVA diodes are expensive and inefficient but a small price to pay for the improvement in yield. I could not find
365nm LG3535's but the 3 watt epistar diodes cost $3.50 and produce a minimum of 500mw at 700ma
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so in dummies terms , does that mean 4% of the total output? (4 diodes out of 100) Thanks.
 
getogrow said:
so in dummies terms , does that mean 4% of the total output? (4 diodes out of 100) Thanks.
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thats what it looks like however UVA leds are less efficient than 301 diodes. these have an efficiency of 20%. 301s are close to 60% https://www.ebay.com/itm/10x-LG-3W-...DC-3-4-4V-700ma/223290539700?var=522073754035 so you need 10-12 diodes/hundred' uv diodes are getting better but they are still not very efficient. I use these to get 365nm. they are true black lights not just painted bulbs. they are a true 365nm bulb https://www.amazon.com/dp/B0002F554...colid=AW7UKM9ED6GM&psc=1&ref_=lv_ov_lig_dp_it cheap way to test UVA in your grow room. in a test grow using 4000k bridgelux strips I found adding UVA eliminated the need for cal-mag and gave me more sugar on my buds
 
mauricem00 said:
thats what it looks like however UVA leds are less efficient than 301 diodes. these have an efficiency of 20%. 301s are close to 60% https://www.ebay.com/itm/10x-LG-3W-...DC-3-4-4V-700ma/223290539700?var=522073754035 so you need 10-12 diodes/hundred' uv diodes are getting better but they are still not very efficient. I use these to get 365nm. they are true black lights not just painted bulbs. they are a true 365nm bulb https://www.amazon.com/dp/B0002F554...colid=AW7UKM9ED6GM&psc=1&ref_=lv_ov_lig_dp_it cheap way to test UVA in your grow room. in a test grow using 4000k bridgelux strips I found adding UVA eliminated the need for cal-mag and gave me more sugar on my buds
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interesting results regarding calmag.
So i understand what your saying about the 4% now. thanks for clearing that up.
 
I’d say 40+oz in a 4x8 is approaching risk of bud rot...I pulled 20oz from a 4 x 4 last harvest and it was so dense I had bud rot pop up out of nowhere at the six week mark hears what 20oz looks like in a 4x4 ....4 plants 4 way lst running 500 true watts led....1XL mars hydro tsl 2000...and 2x optic 1 xl’s....that’s with a giant dehumidifier running 24/7 and 2x 8” fans exchanging air in tent with an isolating fan running and a carpet dryer fan running 24/7 as well .....can u pull more.....yes would I?.....no not worth the risk....once u get near the 20oz mark in a 4x4 it’s so dense with humidity no amount of air exchange will stave off but rot unless you can keep humidity below 50% 100% of the flower cycle....I live in a very humid environment so if I lived in a dryer area I’d shoot for 2lbs
 

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Buddernugs said:
I’d say 40+oz in a 4x8 is approaching risk of bud rot...I pulled 20oz from a 4 x 4 last harvest and it was so dense I had bud rot pop up out of nowhere at the six week mark hears what 20oz looks like in a 4x4 ....4 plants 4 way lst running 500 true watts led....1XL mars hydro tsl 2000...and 2x optic 1 xl’s....that’s with a giant dehumidifier running 24/7 and 2x 8” fans exchanging air in tent with an isolating fan running and a carpet dryer fan running 24/7 as well .....can u pull more.....yes would I?.....no not worth the risk....once u get near the 20oz mark in a 4x4 it’s so dense with humidity no amount of air exchange will stave off but rot unless you can keep humidity below 50% 100% of the flower cycle....I live in a very humid environment so if I lived in a dryer area I’d shoot for 2lbs
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Risk of bud rot has nothing to do with how many ounce are in your tent. If you are to cheap to run a dehumidifier, you probably shouldnt be growing.
 
If you read the post you can see I stated that I ran one 24/7 non stop during that grow.....
rh% out side was rock solid 80% the whole flowering period. It couldn’t keep up I couldn’t keep it below 60% in the tent
 
Once you have buds on top of buds touching each other it not only traps humidity but the areas touching start sweating.....thick jungles in the Amazon are so humid because of how dense the jungle is,it literally traps the humidity in.....where is barren landscapes even after a rain the humidity drops drastically after because nothings holding the humidity,same concept in a tent it’s a sealed space and everything that’s livening (plant wise) holds and emits humidity it’s Science there’s no disapproving that you have a fucking jungle inside of a tent it’s going to hold humidity it’s also going to throw off a lot of humidity these are facts....plants emit 90+% threw. Transpiration of what they take in if you have four plants in a tent and there are drinking 2 gallons a day that’s a shit ton of water the throwing off
 
Buddernugs said:
If you read the post you can see I stated that I ran one 24/7 non stop during that grow.....
rh% out side was rock solid 80% the whole flowering period. It couldn’t keep up I couldn’t keep it below 60% in the tent
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Then it wasn't big enough or you needed to run a second one. More fans circulating air inside the tent and more air exhausting would help too.
 
I had 2 730 cfm 8” fans a 375cfm carpet dryer and an 16” osolating fan running 24/7. And the 1 deff ineptly was not cutting it iv sibe got a 2nd one
 
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