What is the longevity of components on these PLL's ?I would imagine the workhorse ballasts last ok? Is bulb failure an issue?
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Jellypowered
Member
Speaking for fullham workhorse ballasts only, if you keep them below their maximum rated output they will basically last forever.
The bulbs are like any other fluros, as they get older their intensity drops off. You can probably get one or two grows out of a set of bulbs before you notice the output dropping off.
The bulbs are like any other fluros, as they get older their intensity drops off. You can probably get one or two grows out of a set of bulbs before you notice the output dropping off.
I have been using my bulbs for 2 years growing non stop. Did not measure lumens or anything but felt that the number of hours they were used was enough to drop the intensity by 10% or more.
I am using the 10,000K Finisher bulbs start to finish. The quality of the smoke has been high. Use a uvb cfl for a couple days too at end of flower.
I am using the 10,000K Finisher bulbs start to finish. The quality of the smoke has been high. Use a uvb cfl for a couple days too at end of flower.
Boleman
Active member
Boleman = Melkor420
Boleman = Melkor420
Ok,
PLL Club. It has been a long time since I have posted here. But I am still building pl-l cabs as well.
I want to show you something NEW and Exciting! Then I will start a new club.
COB LEDs are the future. Ultra low wattage, high output of lumens and low heat resonance!! Check out this pic!
https://www.icmag.com/ic/picture.php?albumid=74558&pictureid=1940651
Boleman = Melkor420
Ok,
PLL Club. It has been a long time since I have posted here. But I am still building pl-l cabs as well.
I want to show you something NEW and Exciting! Then I will start a new club.
COB LEDs are the future. Ultra low wattage, high output of lumens and low heat resonance!! Check out this pic!
https://www.icmag.com/ic/picture.php?albumid=74558&pictureid=1940651
Douglas.Curtis
Autistic Diplomat in Training
Blast from the past 
I remember loving my PL-L lamps
Are the Meanwell drivers the same as the fulham ballasts?? It's simply an ac/dc converter, no?
Personally, I'm looking at strip led lighting vs cobs. I have some cobs running and I'm just not sold on having a heat sink and fan for each one. heh LEDs are definitely awesome tech for growing though.
I remember loving my PL-L lamps Are the Meanwell drivers the same as the fulham ballasts?? It's simply an ac/dc converter, no?
Personally, I'm looking at strip led lighting vs cobs. I have some cobs running and I'm just not sold on having a heat sink and fan for each one. heh
LEDs are definitely awesome tech for growing though. 
Douglas.Curtis
Autistic Diplomat in Training
I'd like to see LED plug in replacements, for everyone still rocking the old ballasts. I'm picturing 55w plug-in boards about the same length as the lamps, yeah? Some LM301B chips and a few crees?
I'm picturing 55w plug-in boards about the same length as the lamps, yeah? Some LM301B chips and a few crees? 
Yup, I have 3 x 55W, been flowering with this rig a few years,
replace the bulbs often enough to seek out an LED retrofit.
So far no complaints with quality, but I feel the LED retrofit
may increase yield.
Douglas.Curtis
Autistic Diplomat in Training
1000bulbs.com has some, but I have no idea what's what or worth picking up for cannabis.
PL-L LED Retrofit lamps
They work with the PL-L rated ballasts and do not need a different LED driver.
PL-L LED Retrofit lamps
They work with the PL-L rated ballasts and do not need a different LED driver.
St. Phatty
Active member
PLL = phase locked loop, sometimes.
what does it mean with LED lights ?
what does it mean with LED lights ?
oldone
Member
Light Emitting Diode.
I stopped using the pll at 10,000K. Went over to LED replacement for pll at 6400K . I am using LED at around 4000K now and the other area at 5000K because I can get more lumens out of these lights. Easier to just use LED but I wish they went higher in Kelvin.
Not sure what I gave up in quality using LED, if anything. I would have to run a side by side using clones.
Not sure what I gave up in quality using LED, if anything. I would have to run a side by side using clones.
Some years ago I had a par meter passing through my house and measured my pll and diy led sets. Led had double the par for half the wattage if I remember correctly. I put all my pll fixtures in a box, for future use. I do use cfl for UV a/b, as there are no good affordable leds for this. Yet.
