grotbags
Well-Known Member
no, cutters strips are far better.
Guide me to the Light....
- Thread starter DukeFluke
- Start date
grotbags
Well-Known Member
far to much blue just look at the size of that spike, they are using 80cri 561 which already has a massive 450nm pump then adding more 450nm mono's?. doesn't make sense.
Jesus, I'm so fuckin glad you said that.
I was talking to Mark from cutter last night for quite a while... fell asleep twice lol... Foiled by timezones I was
Anyway, he wants a basic sketch of my grow space before he puts the order in, which I think is a pretty solid thing to do. I was ready to go with my basket and he could have took the payment there and then, but instead I'm getting on to him tonight and mailing him a basic drawing of the area.
So... if all goes well I'll be official tonight. Then we'll move on to the heatsinking and other bits and bobs.
Nizza
Well-Known Member
If you are limited on vertical space , I would think some extra blue could be of benefit to reduce stretching. Not 100% sure but I always use extra blue for stretchy plants in an attempt to reduce stretch, along with kelp sprays late veg/early flower, then after the stretch is done I turn up my more "red" lighting and dim the blue back.
Yo Nizza, I hear you. But believe it or not the vertical space wouldn't be such a problem. My screen starts very close to the ground and then I install drippers and run a semi auto feed thing where I just turn on the pump. The distance between the canopy and the light would be the same as someone growing taller plants and having a higher ceiling
So...
When Moflow linked me that R2T strip it had me thinking. R2T had just given me a quote
This is what they had
R2T Strip
Rock 240+X LED Board, Al,
Board Spec.: 995*70*2mm
HASL, 1oz,2.0w/m
240pcs Samsung301B/SK/SL ,CCT: 3000k/3500k/4000k/5000k/6500k, RA:80
14pcs Samsung LH35H-660nm chips
input is:45-54Vdc/1400mA(max.2100mA with heatsink),
And this is what Mark from Cutter helped me narrow my choice down to
Cutter Strip
Cree 2835 HE(96)3500k with Cree XPG-3(4) G bin 660nm.
The blend of 3500k and XPG3 Deep Red creates a final CCT of 3094K at 93CRI
So...
When Moflow linked me that R2T strip it had me thinking. R2T had just given me a quote
This is what they had
R2T Strip
Rock 240+X LED Board, Al,
Board Spec.: 995*70*2mm
HASL, 1oz,2.0w/m
240pcs Samsung301B/SK/SL ,CCT: 3000k/3500k/4000k/5000k/6500k, RA:80
14pcs Samsung LH35H-660nm chips
input is:45-54Vdc/1400mA(max.2100mA with heatsink),
And this is what Mark from Cutter helped me narrow my choice down to
Cutter Strip
Cree 2835 HE(96)3500k with Cree XPG-3(4) G bin 660nm.
The blend of 3500k and XPG3 Deep Red creates a final CCT of 3094K at 93CRI
Last edited:
grotbags
Well-Known Member
mark from cutter posts on here as @welight if you didnt know.
what strips are you thinking of going for?.
just to touch on heatsinking for a second, the fewer strips you buy the harder you will have to run them needing a more robust heatsink. finding long enough lengths of good multi finned heatsink in the uk is hard and expensive, often as much as the strips can cost. its often better to buy more strips and run em softer and you will get away with just some lightweight "C" or "U" aluminium channel which can be sourced easy and cheap enough in the uk.
Airwalker16
Well-Known Member
One large piece will be more able to dissapate the heat over indiduual strips of it.
@Airwalker16 Fair enough, but then I lose part of the point of the build, which is to allow heat to rise and escape between the strips and ventilate directly out of the room
grotbags
Well-Known Member
you will have to check the specs to see how hard they need to be ran to meet your required watt/foot.
for a piece of flat ali sheet i would probs want to be less than half power? not really sure as i have never used it.
grotbags
Well-Known Member
yep that would be my main negative about using a solid flat sheet, its a big blocker to room circ.
From the cutter site
with 500ma for 25 watt operation recommended drive current with minimal heat sinking, at 1amp, 50 watt, would recommend good quality thermal bed, Cooler or Aluminium Sheet
so 16 of these at 25w runs me at 400W which is about where I'd like to be
Driver maxed out at 480w and they're still only 30 a piece, which is well below the 50 max
Edit: So if aluminium sheet is recommended at 50w, I'm sure I'll get away with 3mm strips at 25-30w, yep?
with 500ma for 25 watt operation recommended drive current with minimal heat sinking, at 1amp, 50 watt, would recommend good quality thermal bed, Cooler or Aluminium Sheet
so 16 of these at 25w runs me at 400W which is about where I'd like to be
Driver maxed out at 480w and they're still only 30 a piece, which is well below the 50 max
Edit: So if aluminium sheet is recommended at 50w, I'm sure I'll get away with 3mm strips at 25-30w, yep?
grotbags
Well-Known Member
i doubt it. they must need a better sink than flat sheet for their 50w max?
No I never, would have helped me a lot over the last few days tbh. Sods law
Possibly, I wouldn't know.
But on a 480w driver over 16 strips, I'm never gonna find out eh?
Don't mind doing that at all. If you've got any links to a good source fire away
grotbags
Well-Known Member
grotbags
Well-Known Member
or a little better and what i have used - https://www.tme.eu/gb/details/rad-p22139_1200/radiators/stonecold/