thanks. did it once in veg, once 3 weeks into 12/12. one other ? Does a light with 100 ten watt leds actually put out 1000 watts. Just got stoned and ordered 2. Just wondering cuz my MarsHydro 600 is 278 watts.
@bryan , MMMM don’t know how to say this, but you need to remove that filter out it’ll mildew soon . try to avoid any paper products in hydro .also with coco coir you’ll have to add a add cal / mag as it robs it out of the nutes .Or use a nute line designed for coco coir .
Hammer .
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@bryan ,@Aquaponic_Dumme has a pict some where you should see in regards to removing shade leaves . itll make you a believer in Not removing them . tuck them out of the way if you can .
Hammer .
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@Hammer Will take out the coffee filter, darn it. (Evil Genius-in-training) 
But will come up with something; maybe wife’s nylons… So on my light question, will a light with 100 ten watt LEDs actually put out 1000 watt? Also, did I understand correctly that the coco coir itself absorbs the Ca,Mg into it?
@bryan .When it comes to LED’s i tend to go with the science guy @MacGyverStoner . this guy builds his own . and that says a lot to me . ive atted him so he’ll chime in i hope 
Hammer .
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@Hammer Thank You Sir. I have been watching some utube on light building. Really looks like fun.
@bryan, I thought you might like to check these threads out.
Hope this helps, cheers
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Thanks @Aquaponic_Dumme will read them. Hoping to get most of my mistakes out of the way with this beginner grow.
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@Aquaponic_Dumme @Hammer That was great info for this hydro newbie. Satisfied my desire for “WHY” to do a particular thing. If I continue to get my mistakes out of the way with this first dwc plant, she will not turn hermie, she will be a cross-dresser.
(as I sneak out to the garden to trim those pedioles.)
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Well that depends on what the label of 10 watts means. This is the reason we ask for actual watts used when it comes to LEDs.
The short answer is no, probably.
Most LEDs are labeled at maximum wattage they can tolerate before they burn out. Better LED companies might give you that number for their entire system, but will also tell you how much the unit actually consumes, and how many watts it would cover when compared to, or equivalent to, a HID light.
I have to mention a caveat when talking about equivalent watts. A lot of lights off a regular or hardware store shelf, when they say equivalent watts, they are referring to your average incandescent bulb, and a watt of household incandescent lighting is not at all equal to a HID watt. Again, especially with fluorescent lights, this is why we ask for actual watts consumed by the light, as most fluorescent light are compared to the household incadecent watts they would be equivalent too.
So back to LEDs, when you are buying individual LED diodes or COBs, usually the wattage mentioned is reffering to max wattage the diode or COB can take, max, before burning out. Now actually running the LED at max usually dramatically shortens their lifespan, and actually is a waste of energy, as most LEDs are much more efficient in the amount of light they put out compared to the watts they use at a much lower wattage than their max.
Generally this wattage is near half, to maybe near 2/3rd, the total max wattage rating.
This is why often most LED systems actually only use about half the wattage of their labeled name, which is usually based on that max number.
And so, if your are building and choosing the LED driver yourself, more than likely you’d use one around 500-600 watts.
If it is a pre-assembled model that uses said LED COBs, you can get the actual wattage used usually from the manufacturer.
If you want a pretty good detailed tutorial that will help you build this LED system with COBs you are thinking about buying, check out the videos from this guy and his youtube cohorts:
BTW, his name is ‘growmau5’, and it is pronounced Grow Mouse’ as if the 5 were a letter S. Just an FYI 
happy growing,
MacG
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I can’t thank you enough for the link!! I see a light at the end of the tunnel. Guarantee I will be watching it repeatedly cuz I MAY be getting a basic grasp of the knowledge. Am I correct in these? Advertised wattage in led is only referring to how much equivalent light in HPS spectrums it puts out. My MarsHydro 600s put out same light as a 600 watt HPS; just do it with 278 watts.
Not necessarily. It might refer to the equivalent HID (HPS is a type of HID) but more often than not, especially with something like a mars hydro as opposed to a more expensive brand, it is referring to the max wattage that the LEDs that the system is made out of, their max wattage before they’d burn out.
~MacG
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You need to check it’s footprint during flower to make sure it will cover your area’s size during flower. Mars is usually pretty good at giving you a veg footprint and a flower footprint.
But also consider this, it is usually recommended to use 50 watts per square foot for HPS lights, and some LEDs are good enough to only need 25 watts per square foot.
And 25 watts is half of 50 watts, so as I said, usually the wattage a LED actually uses is about half of its total max rated watts, and so with many LEDs, the max wattage and the equivalent it is to HPS would actually be about the same.
~MacG
Gotcha. Numbers for HPS and max wattage to blow my LEDs are similar. LEDs are consuming 1/2 power, means real life HPS equivalent is half. (more or less).
Follow-up…Received my off brand 1000 watt led and compared it to my MarsHydro 600. 1000 watt light is physically half the size as MarsH. Bulb spacing is Much closer on the 1000W and to my eye, the 1000W bulbs are a bit brighter. 1000 W has UV and IR bulbs; Mars Don’t. 1000W has on/off switch, Mars don’t. 1000W has more penetration but MarsH seems to have larger coverage area. So…MarsH covers larger area with less light. Both cost about the same; within a few bucks. I would get the 1000W
Hey, don’t be staring into the light with UV and IR bulbs. And you might consider getting a welding type sungallsses or something for protection against the IR, and hopefully it blocks UV as well. I think @Latewood can tell you about how working under HPS without protection might have contributed to his current vision problems. HPS has a ton of IR light in it and apparently a little UV as well.
Happy Growing,
MacG
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Eye protection is a must my friend damage can’t be repaired once done and don’t stare into lights with uv and ir As @MacGyverStoner has stated
Enjoy your new light @bryan
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Update… New growth clearly is iron-deficient. Not sure what to add to my “Envy” brand nutes. Also, need supplement to add whatever goes along with iron deficiency. New growth is pale with green veins. Plant leaf seems to catch up and turns to same nice color after 4-5 days. Is “Thrive” the answer?
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@MacGyverStoner @Aquaponic_Dumme @Hammer @anybodywhowillanswer… What do I need to add to dwc for iron deficiency?