Lassef
Member
22 - 25 degree C (72 - 77 F) at my large tank but in my RSM hood is the temperature higher - upp to 30 - 32 C (86 - 90 F)
Sincerely Lasse
Minimalistic multichip DIY LED build
- Thread starter maglofster
- Start date
22 - 25 degree C (72 - 77 F) at my large tank but in my RSM hood is the temperature higher - upp to 30 - 32 C (86 - 90 F)
Sincerely Lasse
mikez104
Premium Member
I got them from acrc hobby on ebay. Pm me if you want a link. They got here in about a week and a half. I'm trying to do away with those noisy fans in the hood. We'll see if that is possible. The mounting holes are way small so i just ordered some of that heat sink epoxy stuff. Hopefully that will make mounting them in their permanent location easier.
Clarence01
New member
I just ordered 6x 50W Bridgelux 14000K LED with 6x 60 degree optics on yesterday. They hopefully will arrive on mid of next week. This is the time for me to order the LED driver/power supply right now.
The LED data sheet mentioned that DC forward Current and Peak forward current of 1.75A and 3A respectively.
HLG-150-48 data sheet mentioned 153.6W and adjustable current from 1.92 to 3.2A
I would like to run the LED in 70% full power, that mean I need only 2.1A.
May I use 2x HLG-150-48 to run all 6 LED, each driver for 3 LEDs in series connection?
Please advise
The LED data sheet mentioned that DC forward Current and Peak forward current of 1.75A and 3A respectively.
HLG-150-48 data sheet mentioned 153.6W and adjustable current from 1.92 to 3.2A
I would like to run the LED in 70% full power, that mean I need only 2.1A.
May I use 2x HLG-150-48 to run all 6 LED, each driver for 3 LEDs in series connection?
Please advise
Lassef
Member
Can you post a link to the datasheet for the LED chip. I need to know the range of the Forward Voltage
Sincerely Lasse
Clarence01
New member
I have the hard copy only. Could you mind send me your email address?
bdwilson
New member
Would this heatsink work for 50W multichip LED and how about a 100W?
http://www.newegg.com/Product/Product.aspx?Item=N82E16835200029&Tpk=rosewill rcx-z200
http://www.newegg.com/Product/Product.aspx?Item=N82E16835200029&Tpk=rosewill rcx-z200
Hrmm.. maybe. I personally prefer the ones with heat pipes, as they are definately overpowered for the chips. That one is just a block of aluminum with a fan. Definately good for a 30w, probably ok for a 50w (not really sure though). I wouldn't use it with a 100w though.
If you are looking for cheap, look for one of the AMD OEM heatsinks. Very small like that, usually cheap ($20ish) and has heatpipes.
If you are looking for cheap, look for one of the AMD OEM heatsinks. Very small like that, usually cheap ($20ish) and has heatpipes.
bdwilson
New member
Thanks for responding.
I looked more based on your suggestion and found this one, $14 with heatpipes and a fan. http://www.newegg.com/Product/Product.aspx?Item=N82E16835999050
What do you think? Sorry if I'm getting annoying with questions.
How do you guys plan to suspend/hang/mount these CPU heat-sinks ?
If you have a tall wooden fixture on the top of your tank I guess someone could figure out a way to fit and hide them in there.
However, if your tank is rimless, how can you suspend these things in a visually pleasing manner? Any idea?
The advantage of using many weaker LED is that it's easier to make look nicer since they can be attached in a long aluminum bar, which in itself is not as ugly as a CPU heatsink.
If you have a tall wooden fixture on the top of your tank I guess someone could figure out a way to fit and hide them in there.
However, if your tank is rimless, how can you suspend these things in a visually pleasing manner? Any idea?
The advantage of using many weaker LED is that it's easier to make look nicer since they can be attached in a long aluminum bar, which in itself is not as ugly as a CPU heatsink.
Lassef
Member
That's similar to what I used on my 50W. With the fan on, it's great. Without the fan, it's gets pretty hot. I don't think I would use that with a 100W.
mr.wilson
.Registered Member
Lassef
Member
Probably has the AC-RC hybrid a shorter peak wavelenght (eg 445 nm) comparefd with the led-hk. My belive is that the 445 peak wavelength is better for growth.
Here is one of the best compilations I've seen on the wavelengths of interest for different types of "chlorophyll"
Summary: (from Photosynthesis, 6th Edition" by Hall & Rao (1999.
Cambridge University Press)
Chlorophylls:
Chlorophyll a .... 420nm and 660nm .... in all higher plants and algae
Chlorophyll b .... 435nm and 643nm .... in all higher plants and green algae
Chlorophyll c .... 445nm and 625nm .... in diatoms and brown algae
Chlorophyll d .... 450nm and 690nm .... in red algae
Carotenoids:
beta-carotene .... 425nm, 450nm, 480nm ... in higher plants and most algae
alpha-carotene ... 420nm, 440nm, 480nm ... in most plants and some algae
Luteol ........... 425nm, 445nm, 475nm ... in green and red algae and higher plants
Violaxanthol ..... 425nm, 450nm, 475nm ... in diatoms and brown algae
Phycobilins (water soluble):
Phycoerythrins ... 490nm, 546nm, 576nm ... in red algae and some
cyanobacteria
Phycocyanins ..... 618nm ................. in some red algae and
cyanobacteria
Allophycocyanins . 650nm ................. cyanobacteria and red algae
According to chlorophyll b have I seen other figures at the blue part - 450 nm.
Chlorophyll c is probably the most interesting chlorophyll for us because it occurs (along with chlorophyll a) in dinoflagellates and diatoms (the most common Zooxanthellae´s of corals)
Sincerely Lasse
Lassef
Member
Safety wire hangers for testing stages.
I really do not know if this is a result of imagination or lack of imagination
Sincerely Lasse
I really do not know if this is a result of imagination or lack of imagination
Sincerely Lasse
It's a lot of both!
