DiY LED - Cree CXA3070

SupraSPL

SupraSPL

Well-Known Member
SupraSPL said:
I had to shut down the fresh air due to humidity and I am very surprised at how fast CO2 rose. The exhaust air from the grow space was up to 1000ppm and the air upstairs is about 1300ppm. So apparently, the CO2 levels are much higher with windows closed than open as long as someone is there to breathe (2 people in a total air space ~1000sq ft with standard ceiling height)
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Windows have been closed for over 24 hours now and CO2 is over 1800ppm everywhere including the canopy. Apparently the plants cannot keep up with 2 humans. There is also 160L of soil "cooking", 2 cats, 4 worm bins and a few compost bins all contributing CO2 but the vast majority of it is coming from me.

Bumped up one of the flower rooms to 625W dissipation the other room is at 575W and that will get bumped up to 625 also. Increased the vegging wattage with the CXA3590 so vegging wattage is 80W when dimmed, 100W if I need more.

Should have the numbers from the last batch in a few days. This is the last batch that used Z2s, the next will be a mix of Z4s and ABs. The passive room is all ABs but that wont be weighed for a few months.
 
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CaliWorthington

CaliWorthington

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A 16" oscillating fan has made a big difference in the 20 COB room. Temps are way better, the exhaust comes on far less frequently. I might aim the 12" that wasn't cutting it at the LED driver board, until I get a pair of 140mm mounted on there.

I always had a 16" fan in there before, I just bought the 12" Air King one day because I was sick of fans breaking and it was on the shelf.
 
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SupraSPL

SupraSPL

Well-Known Member
Just got the numbers on the newest batch, 1.17 gr/W and my mind is blown. That run used mostly Z2s, (4) Z4s and (32) XTes. Also, it was a batch of random test beans no selection. Everything was finished in less than 60 days including the Venom OG. There was no sacrifice of quality, I was happy with the frosting and flavor. No soda can sized buds with shaded out insides, everything is primo condition.

Nothing about the lights had changed since the last run in this tent, which turned out .9 gr/W. So what explains the large increase, better use of the vertical height gained from scrapping the HPS. Used more soil overall and put more emphasis into vegging them up and tried to keep them from fading too early. So I will keep working that angle, adding more soil and added a lot more light to the vegging side.

Generally speaking the low yielders were not vegged up as much and the high yielders were very tall. So I am not passing judgement on the low yielders just yet.

Rare Dankness Venom OG - 52
Mr Nice Shit 1 - 53
Mr Nice Shit 2 - 42
HSO EMDOG1 - 76
HSO EMDOG2 - 34
HSO EMDOG3 - 68
DNA Secret Sour - 70
DNA Kosher Tangie - 77
Reserva Privada Silver Kush - 66
Cali Connection Buddha Tahoe OG - 33

488W (LED dissipation power)
571/488 = 1.17
 
SupraSPL

SupraSPL

Well-Known Member
Yessr 5 gal buckets with ~3.5 gal soil in each. I was able to squeeze 12 ladies under 625W in one of the upcoming batches. They are getting huge that one should be a good test.
 
SupraSPL

SupraSPL

Well-Known Member
Whoops looks like we cleaned them out of 50W drivers. Hopefully the next batch is the same quality. I will contact that seller to see if and when they expect more stock. We have been doing some business for other driver sizes and they have been treating me well so far.

Off the top of my head that leaves us with the LPC-60-1400 and the HLG-185H-C1400A dimmable. We will have to search around and see what else we can find.

Yep about 25w/ft². You can pack more intensity than that as long as you have the roots and the nutes to back it up. The Z2s were running at 700mA (43%), Z4s at 900mA (44%) and XTEs at 700mA (34%). The modules on the outer edges are angled inwards a bit and kept close to the canopy.
 
epicfail

epicfail

Well-Known Member
what about the HLG-60H-36*?

I'm not sure how those drivers work but it seems you adjust the voltage to what you need then use it like a CC driver with dimming capabilities. Am I understanding this correctly?

They cost more than the LPC-60-1400 but are PF corrected (0.99 @115VAC), 90% efficient, seem to be dimmable from 1000mA to1700mA and has a 5 year warranty.

or the HLG-60H-42 if 36v is not enough
 
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epicfail

epicfail

Well-Known Member
SupraSPL said:
The CXA3070 hits 36V at about 1A. So we would need the HLG-60H-42 and it would be an awesome dimmable driver .87-1.45A, downside being the cost ~$45.
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Thanks Sup, I think going to get one to play with, maybe use it for a party cup entry in the next comp with a Z4.

Powering my 8 AB's will have to be done with cheaper drivers as 360$usd + shipping/import for just the drivers is to much. I can get the lpc-60-1400 for 22$usd each to my door from china which actually works out to be about the same as the "cheap" ones that were coming from the US after shipping/imports. Its a shame those lpc's have no pfc and are so inefficient but the meanwell name is proven for the longevity and those JLX-LED ones are still being tested.
 
JavaCo

JavaCo

Well-Known Member
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epicfail

epicfail

Well-Known Member
JavaCo said:
This meanwell is a bit cheaper and dimable @ 34 bucks . 90% efficient. Cheapest dimable I have found for the CXA30XX series. http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2148906_-1
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Thanks Java, you just saved me $10. It seems to be the same as the HLG but different IP rating, I wont be using the driver in wet locations so that will not be a problem.

JavaCo said:
Whoops Posted a link to the B version.
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I actually do want the B version so that link was perfect.
 
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