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Hi, I Have read these forums quite a bit but still do not quite grasp how to figure the wattage a particular heat sink is good for. What are the formulas/criteria for deciding how much a heatsink can dissipate? Thank you

Hi, Lets just say accessibility. Can you help with my question?

Good Morning, they are part number CXA3590-0000-000R00AD27F from mouser electronics and prices 61.81 each

Good Morning, I have aquired some more parts!! I now have 3 more cxa3590 2700 , 2 each HLG-185H-C700A and another heatsink measuring 26"x12". Can someone help with the calculations? I would like to put 8 or more 3590's on the 12" heatsink . I think the HLG-185H-C700A will run 4 @ 700ma. Can I...

Ok, I have enough drivers to either run 6 cobs @ 1050 and 1 @ 1200 OR 4 cobs @ 1200 and 3 @ 1050. Which would be better output wise? My goal is to be roughly equivlent to a 600w HPS. Thank you

Hello Again, I read a lot about efficiency and am not sure I understand the goals. Do we run these at lower current to save their life spans? Is it so we produce less heat? Does the output drop at lower current significantly where I would want more cobs if I ran say at .7A ? Are there...

Hello and Thank you! I have ordered 3 each 7.280" Wide Extruded Aluminum Heatsink at 21" I was thinking each should be good for 3 cob's? I have fans I can mount to each. Can I run 2 Cobs at 1050a on the HVGC 150v? I will try and wire up all 7 Cobs. I will be running this setup strictly for...

Hi and let me apologize for my ignorance. It is the wealth of knowledge available here that I rely on. Grow room is 4x4. I aqquired the COB's from someone else who decided not to try them. I actually have 4 3000k. the information I have on the 3000k: Diameter: 34.85 x 34.85MM Viewing Angle...

I have read, and maybe I do not understand enough. I am trying to equal or come close to my 600whps and replace it. Am I in the right ballpark? Thank you for your patience

Hi, I am constructiing a light with 6 CXA3590. I will be running with at 1.2a individual drivers. 3 are 2700k and 3 are 3000k. What kind of lumens should I be expecting from theis configuration? Thankyou

Anyone?

I have been trying to supplement co2 any way I can. I have read a little about ozone lites. I know they create ozone but the description caught my eye. Has anyone used these for minor co2 generation? Here is an excerpt from the bulb description "The titanium dioxide in them reduces these...

A friend of mine calls his smoke "Run of The Hill". He has grown outdoors for 10 years in Northern NH. He has 20 or so plants spread around the side of a mountain with none being in visible distance of the other. Definetely starts them early indoors. Every year he inbreeds a plant and saves...

Go Yanks! This is the year...

Hi All... Been here for a while, I mostly read and do not post much.. Here is my NOOB question. There are so many many strains available, new and old. Everyone on here talks about this strain and that strain. I have looked at just about every strain on Attitude and really just cannot decide...

Mollasas in my hydro tub, what a mess, next day there was a fine layer of a creamy slim all over everything and in everything. Had to clean everything.

How is it going this year 603?

Go Yanks!! BTW A-ROD is the third baseman. Even Non Yankee fans know that one. I grew up on Long Island and went to many a Yankee game with my grandfather.

Hi all, How many Redsox and Yankees fans are out there? We play each other this weekend. Go Yanks!! Just reviving an older thread... I am a Yankee Fan My Wife is a Redsox Fan Sucks when you have to choose between sex and your team.... We are in Northern NH

I am in New England also although a bit North. We have frosts until at least May if not closer to mid May.