DWC to Perpetual

dbkick

dbkick

Well-Known Member
Days are getting shorter , workdays that is. Need a job or two to start up.
Fuck those bulkheads/igloos. I had one more leaking so I drained the system back to the main res and just now decided that I'd just caulk the outside since the leak was a drip. If it doesn't seal I'm gonna toss every one of these things.
 
firsttimeARE

firsttimeARE

Well-Known Member
There was once a thread which I thought was stickied that went over growing with different spectrums of light and why.

Reason im looking for it because i want to experiement witb different bulbs on my t5ho fixture. The bulbs ive been using i think are 6700k but they die in a few months which is bs. They are those cheap made in china agrobrites or whatever the name is.

I wanted to get some quality bulbs made for the aquarium industry.

I knownthere was a guy who went by the name undercurrentdwc who would use actinic 420nm and a 10k and 6700k all mixed together. Wanted to find that thread to read why youd use those varying spectrums vs all the same one.
 
firsttimeARE

firsttimeARE

Well-Known Member
dbkick said:
Days are getting shorter , workdays that is. Need a job or two to start up.
Fuck those bulkheads/igloos. I had one more leaking so I drained the system back to the main res and just now decided that I'd just caulk the outside since the leak was a drip. If it doesn't seal I'm gonna toss every one of these things.
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I wish. I havent taken a lunch break in weeks

Getting burnt the fuck out bidding on 20 projects at a time. Fucked industry.
 
rkymtnman

rkymtnman

Well-Known Member
firsttimeARE said:
There was once a thread which I thought was stickied that went over growing with different spectrums of light and why.

Reason im looking for it because i want to experiement witb different bulbs on my t5ho fixture. The bulbs ive been using i think are 6700k but they die in a few months which is bs. They are those cheap made in china agrobrites or whatever the name is.

I wanted to get some quality bulbs made for the aquarium industry.

I knownthere was a guy who went by the name undercurrentdwc who would use actinic 420nm and a 10k and 6700k all mixed together. Wanted to find that thread to read why youd use those varying spectrums vs all the same one.
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simple answer: to mimic the sun with spectrums from UV to IR.
 
rkymtnman

rkymtnman

Well-Known Member
that's why i posted the simple answer. lol.

@ttystikk can you post a spectral chart for those 860 cmd's you've been using? if you compare cmh to hps or mh, the spectral output from a to z is way higher.
 
ttystikk

ttystikk

Well-Known Member
cdm860-940.gif

What's crazy is that with summer heat I've only been able to run 80% of the watts, or just less than 25W/ft²... and I'm still getting bumper crops.
 
rkymtnman

rkymtnman

Well-Known Member
ttystikk said:
View attachment 3481861

What's crazy is that with summer heat I've only been able to run 80% of the watts, or just less than 25W/ft²... and I'm still getting bumper crops.
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that's why i think this ceramic (whole spectrum) concept is going to replace LED as the next big thing. way back when, people had the right idea by combining hps and mh to get more of a balance but was still lacking in much of the spectrum especially uv. leds tried to get by by going with red and blue spectrums but missing the in-betweens. i used the cmh retro white years ago and if they could have made something with higher watttages, it would have taken off years ago. 400w was the biggest available which was good for closet growers but not the big guys.
 
ttystikk

ttystikk

Well-Known Member
rkymtnman said:
that's why i think this ceramic (whole spectrum) concept is going to replace LED as the next big thing. way back when, people had the right idea by combining hps and mh to get more of a balance but was still lacking in much of the spectrum especially uv. leds tried to get by by going with red and blue spectrums but missing the in-betweens. i used the cmh retro white years ago and if they could have made something with higher watttages, it would have taken off years ago. 400w was the biggest available which was good for closet growers but not the big guys.
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Before making any sweeping pronouncements about the end of LED, you should have a look at the DIY threads of COB LED systems here on this forum. What they're doing is impressive now, and the trend is towards ever better chips for ever lower prices.

I'm a big fan of ceramic metal halide HID but once COB tech hits a certain price point, it will be all over for them, too.
 
rkymtnman

rkymtnman

Well-Known Member
ttystikk said:
Before making any sweeping pronouncements about the end of LED, you should have a look at the DIY threads of COB LED systems here on this forum. What they're doing is impressive now, and the trend is towards ever better chips for ever lower prices.

I'm a big fan of ceramic metal halide HID but once COB tech hits a certain price point, it will be all over for them, too.
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i agree to a point. i have a 5watt per led and unless cob is much better, you just dont' get the penetration of hid be it hps, mh, cmh. maybe i need to check on those COBs before i shit the bed on LED. to it's credit, it's the best veg lite you could ask for and my grows have already paid in full for it so it stays in the veg tent.
 
firsttimeARE

firsttimeARE

Well-Known Member
6.35 35 day vegs youd get out of 6 tubes. Only 2 bulbs I planned on using were 20 per. The ATI true actinic and coral plus. With (2) of each GE 4100k and 6500k at about $10 per. $80 every 6 35 day veg cycles. Get about 4-5 times more life out of a MH.

The spectrums look similar too. I wish there were a spectrum smash so I could smash together all those bulbs charts to see the spread.

Or maybe I should ditch the t5ho's as a way of veg....
 
dbkick

dbkick

Well-Known Member
firsttimeARE said:
Yeah never thought about their shit life expectancy.

The cheap ones I have die in like 2-6 months.
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I'd do LEC before T5, LED even before t5 and my panels have single emitters. Dunno what a cob has on the same wattage of single emitters.
 
ttystikk

ttystikk

Well-Known Member
rkymtnman said:
i agree to a point. i have a 5watt per led and unless cob is much better, you just dont' get the penetration of hid be it hps, mh, cmh. maybe i need to check on those COBs before i shit the bed on LED. to it's credit, it's the best veg lite you could ask for and my grows have already paid in full for it so it stays in the veg tent.
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You can choose your spectrum band from a wide range of options with COB chips. They're pushing as much as 100W per COB chip, though usually the guys are running about half that in order to maintain efficiency ratings over 50%. For fifty bux a chip (plus maybe fifteen or twenty per chip towards the necessary driver), that's pretty damn impressive performance... and it's only getting better.
 
dbkick

dbkick

Well-Known Member
RapidLED has some fairly new panels out called Indus. I thought they were an upgrade from the xml2 the onyx uses but it turns out they perform the same they're just a smaller die (was corrected the other day).
But they're somewhat cheaper than an onyx (actually they're more costly BUT they have 12 more emitters than the onyx).,$449 for the 40 diode unit.
 
firsttimeARE

firsttimeARE

Well-Known Member
I seen people DIY COB LED's on my brief stay on 420mag...or icmag one of those. They looked cool. But even them DIY they were still $$$ AF
 
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