That's a really intelligent comment mate.
Care to explain, in detail? Without some silly illustration, you got from an LED manufacturer.
Please educate me a little if you can, maybe im wrong.
But i think you'll find im not.
ditching hps for quantum lights
- Thread starter cobber
- Start date
Care to explain, in detail? Without some silly illustration, you got from an LED manufacturer.
Please educate me a little if you can, maybe im wrong.
But i think you'll find im not.
Good luck to you too mate
Words, of a person who's lost a debate.
I'll count that as +1 for me
Until of course im proven wrong, then im going straight out to buy LED.
I hope your light does really well. Truly. Then ill buy one too.
ANC
Well-Known Member
it is not so simple....
Imagine you had a glowing blanket you could hang 2 inches above the canopy that delivers 1000ppfd at canopy level...
What is the PPFD 2 inches down from that?
Now imagine you had an HID hanging at 3 feet above the canopy delivering 1000PPFD at canopy level...what would that be 2 inches down?
I could do a similar comparison using trigonometry to show you the lengths of the sides of a triangle to show the drop off from the center to the edge of the trays depending on how high you HAVE to hang a light..
Sirtwistsalot
Well-Known Member
Penetrate this...
Quantums, love and faith.
Quantums, love and faith.
Nice, healthy, flowering plants. With lots of fresh air.
What's the point?
They look healthy to me.
Gquebed
Well-Known Member
Hey... consider this:
I know you can grow well. Ive seen your stuff. You will figure this out.
I switched to cobs last year and did two runs. Growing with them made me realize that the game changes from hps growing, because i failed... i didnt adapt well enough. I lost confidence in my skills and went back to hps for this year to regain that lost confidence.
BUT! i did see the potential in those cob lights. So i know i didnt waste my money. Im sold on em, inspite of failing. I just know i have to adapt to them better so im going to give them another go next round.
I imagine switiching to QBs is very similar since its a variation of the same tech. Just need to take the plunge and get after it.
PS. I measure my succeess/failure based on what i can yield with hps in my space. With cobs, I did about 1/2 of what i coulda done with hps. But it was all my fault. I know that. Had i fucked up only 1/2 of what i fucked up i still wouldve yielded more than i normally do with hps. If i had a clean run, i woulda killed it.
So... dont worry about the qb or cobs, just go in knowing there is a learning curve with them.. and youll be fine. I regret having gone bqck to HPS... shoulda spent that time tuning me into running cobs.
a mongo frog
Well-Known Member
What type of learning curve is there? The room will be set up to where if it starts to look like LED is not going to match the prior hps run, ill be able to switch back immediately. Hopefully in less then an hour.
This is the said room getting switched from HPS to 2 QB 600's and 1 750 watt cob unit. Same spacing exactly on center. Co2 enriched also, just don't know if burner is needed or or injection will be fine. Don't want a cool running room (80 degrees min).
Thanks for the feed back, I'm listening to everything and watching all threads. The 2 QB lamps should be here in 2 days!!!
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Gquebed
Well-Known Member
Dialling in on the right temps and figuring out the nutes was what i struggled with. QBs might not be as tricky cause it seems like the light is more spread out... i dunno... no experience with them.
But with the cobs... they are intense...
i was told to keep the temps higher...round 83ish... because lack of ir kept leaf surface temp cooler and transpiration was a bit slower. And i didnt listen. I kept my temps about 78 to 80ish.
Also, the intensity of the cobs made caused me some cal/mag probs i didnt really sort out. My water is high in cal so i didnt add as much cal mag as i prolly shouldve and ended up with various nute deficiencies.
In spite of having grown for 8 years now, im not good at identifying nute probs early. I think its just lack of experience becuse i just havent had to deal with nute probs much. Usually have clean runs...
Anyway, dialling in the enviro and matching the nutes is the learning curve....
Also, light height. The manufacturer said 16ish inches above the canopy, but i quickly found that was too low. Bleaching...fast. i was good about 22ish inches...
@Gauebed
Cheers for your honest info man.
Im really excited, for led's too.
Thanks for the feedback.
Sounds like they didn't do all that bad anyway.
I'll be keen to know how you go, on your second run.
They're definitely catching up. Thats for sure.
I just want them to suit my circumstances.
For me, i need versatility, and flexibility.
I just like to let plants go for it, and let them grow, however they want.
Its part of the fun, in this hobby, for me.
I love all the different phenotypes, in regular seeds.
Hps, really gives me that freedom.
Cheers for your honest info man.
Im really excited, for led's too.
Thanks for the feedback.
Sounds like they didn't do all that bad anyway.
I'll be keen to know how you go, on your second run.
They're definitely catching up. Thats for sure.
I just want them to suit my circumstances.
For me, i need versatility, and flexibility.
I just like to let plants go for it, and let them grow, however they want.
Its part of the fun, in this hobby, for me.
I love all the different phenotypes, in regular seeds.
Hps, really gives me that freedom.
thumper60
Well-Known Member
cut back on the n not bad!
thumper60
Well-Known Member
be checking in ben reading tons, our rooms bout the same hoping the 6s cover a 1k
Rakin
Well-Known Member
LMFAO!
Sirtwistsalot
Well-Known Member
Right side...check!
Rakin
Well-Known Member
Did you space those out on the edges of double heat sinks? What wattage are you running the board at and how hot is the non sink sides of the board? I like it
Sirtwistsalot
Well-Known Member
I have the drivers turned down. Half the QBS are 288 and half are 304. At the current setting the 288s run at 103°/115° (on/off heatsink) and the 304s run at 109°/114°. 1 rig=4 boards=600 w at the current setting. So, 4 rigs (16qbs) draw 2400w. I stagger the lights with timers. One half on for 6, other half on for the other 6. Still covers the 4x4 area (1 rig per 4x4) but uses half the electricity. In other words instead of 2400w, I use 1200w. If I ran it all, it would be 4800w. Instead I use 2400w. Kinda like a using a light mover. Before heads explode, factor in the various shading effects that occur in nature. Most plants in nature don't get 12hrs of direct full sun every day all day. So, I tested it out and will keep doing it. 8 plants total. Perpetual goal. I have also played with turning all the drivers all the way down and keeping all the lights on. I'm still experimenting. The spacing gives better coverage over a 4x4 area.
