Can someone help me with my shopping list?
First, I'd like to run 4 cxb 72v cobs at apx 75 watts. Eventually I'll get more cobs and focus on efficiency.
Are there pin or fin individual heat sinks, not like the heatsinkusa model, that can actively cool apx 75-80 watts? I'd like it to be able to handle 80 watts passively, should the fan fail.
Does kingbrite have the HLG-320-1050 or 1400 somewhere that I'm not seeing? I'll check prices on the hlg185, to run 2 chips at 75w. Would that work?
Does anyone know the light penetration data for the 120, 90, and 80 degree lenses? I'd like to use the 4 in a 2x2 pattern to cover apx 6-8 sq ft. Some say lenses don't matter; I don't know either way, but I'd like the cobs to be covered; this 4x4 is a horizontal grow, so I'd like some concentrated penetration, but I'm just not sure what degree based on those measurements.
If I were to use the heatsinkusa model, what size would I need to cover the total 300 watts across 4 individual sinks? Is it possible to cut, tap and drill without specialized equipment?
I'm leaning towards the pin heat sink, as I can't measure, tap and drill.
In truth, I really don't know what to do. It's like the super market; I'm overwhelmed by the possibilities.
Do I put the 4 on a single large heat sink that can cover 6-8 sqft, slap a large fan on it, and call it good? Would that be cost or weight prohibitive? Does anyone remember who built the panel affectionately named after battlestar galactica?
Do I get little individual pin or fin fans and hang them separately? Do I mount them to a thin, preferably non-conductive frame, where the cob module could be moved based on the needs of the tent?
There's a shopping list I'm sure I'll need: wire and waterproof wire insulator (I'd like the driver to be outside of the tent for heat reasons), the appropriate cob holder (through Jerry), and whatever else I'll need. I'm proficient with soddering, and built my first display using the internets, lohas chips, buck boosters and prayers that I wouldn't get shocked.
Thank you, for everyone that helps. I'll post pics in my own thread sometime.
I'm in FOCO Colorado, and given that it's legal, I'll post my progress. Thus far I overwatered and killed one plant; and I may have added too much humic acid to a compost tea, really hurting another. One of six looks amazing, and even the one I overwatered and killed is better than most of the available stuff at FOCO dispensaries.
That's one of the paradoxes of northern Colorado: dispensaries, dispensaries everywhere, but not a bud to vape. The lack of competition has driven prices up and quality down. But I'll wax about that in my own thread.
Thanks again.