larrypizzimp93
Well-Known Member
I have my whole flower room setup with 4 -1k hps and its getting too hot with also some light bleaching. If I have a 600 sitting on top of the canopy would there be a big difference in yield?
is there a big difference between 600w hps vs 1000w hps?
- Thread starter larrypizzimp93
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SPLFreak808
Well-Known Member
Light bleaching alone will negatively effect yield, so yeah swapping to a 600 could help you.
ttystikk
Well-Known Member
Yep.
About 400 Watts.
Look, this is 2019. Invest in some good quality LED lighting, or save some money and take advantage of the extraordinary depth of knowledge here on RIU to DIY your own. A good setup will last decades, where you'll be swapping single ended lamps every 6 months to maintain performance.
LED lights also generate a MUCH smaller load on your AC, leading to even more savings.
Streetlights are sooooo 1999.
I run quantum boards and HID.
Without a doubt, hands down, HID grows better.
Quantum boards, without a doubt, hands down, are much much easier to deal with.
As my HIDs go out, I replace with LED, but I will use the HIDs I have until they are unusuable. In a few more years LED will be better all around (IMO) but as of now my HIDs outperform my quantums.
Without a doubt, hands down, HID grows better.
Quantum boards, without a doubt, hands down, are much much easier to deal with.
As my HIDs go out, I replace with LED, but I will use the HIDs I have until they are unusuable. In a few more years LED will be better all around (IMO) but as of now my HIDs outperform my quantums.
ttystikk
Well-Known Member
Keep in mind that the two light sources optimise growth under different conditions;
HID needs lower temperatures due to high infrared output, which warms the plant.
LED works best when ambient temperatures approach 30C/85F, because they're more efficient and don't emit as much infrared heat.
I bet that's why you haven't gotten the results from LED that you've been expecting.
Flowki
Well-Known Member
What would you say is the ideal temp for higher powered cobs?.
ttystikk
Well-Known Member
High efficiency LED likes it around 30C in the experience of myself and many others here. This is due to relatively low infrared light output.
'High powered' reads like 'low efficiency' to me, so if that's the case maybe split the difference between that and the mid 70s the HID guys prefer?
Can you be more specific about what you mean by 'high powered'?
larrypizzimp93
Well-Known Member
what kind of LED would be good for a 4x4 area? I have about $1500. would like to replace 2 of my 1k's
NanoGadget
Well-Known Member
An HLG 550 v2 is built for a 4x4 space, excellent efficiency, overall amazing lights. You won't get 2 of them for 1500 bucks though. If you are handy enough to do simple things like connect wires to wire terminals you could probably DIY 2 4x4 spaces with LED for 1500 or less though. Either buy drivers and quantum boards and assemble yourself, or you could go with 301b strip lights and drivers and have even more flexibility. Just depends on how much of the work you are willing to do.
Flowki
Well-Known Member
Each unit is 2x 100W cob lights. Was just wondering if the higher power would change optimal temps in any way over the normal less concentrated led recommendation. Typically root ''zone'' temp is around 72-75f while canopy rests at around 80 (canopy therm is just below leaves reading 75 so adding 5 as a guesstimate). Should probably invest in one of those fancier readers.
Kingrow1
Well-Known Member
Still the leaf is warmed to a high degree from just normal light or transpiration wouldnt drive.
I would agree but leds shine less which is why they might attain a few degrees more ambient than hps
larrypizzimp93
Well-Known Member
Would cmh be better than a SE HPS? Heard they stay cooler and aren't as expensive as LED?
SPLFreak808
Well-Known Member
Watt for watt, yes.
larrypizzimp93
Well-Known Member
So if I replaced 1 of my 1k hps with a 630cmh would it stay cooler and better yields?
SPLFreak808
Well-Known Member
Cooler for sure, never used a 630cmh so im not so sure a 630cmh would outyield a 1kw SE unless your talking GPW (watt for watt), if anything its probably close.
larrypizzimp93
Well-Known Member
just the cooler part will help a lot as temps are hitting high 80's now. just didn't wanna dump 1500 into 1 LED light. do the cmh produce like no heat?
SPLFreak808
Well-Known Member
Everything that pulls power creates some type of heat, thats the nature of current flowing through metallic objects, what you want to look at is having a said amount of light at a wattage you can handle (efficiency).
Cmh is more efficient than HPS due to the power supply/transistors not needing to work as hard as a full sinewave ballast.
(E.g)
Light A - 1000ppfw , 400w
Light B - 1000ppfw, 200w
Light "B" will reduce your heat by 200W while delivering the same amount of light. In theory, The only difference here is your electric bill & temps.
Cali.Grown>408
Well-Known Member
Heat affects the quality the most and overall health. I’d invest in CMH, COB, Quantom boards, or LED if I were having heat issues..and an AC or swamp cooler
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