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Phpatrick you were right, it was me! For some unknown reason I left of the last number! 2ft = 2000 umol 3ft = 1267 umol 4ft = 885 umol 5ft = 640 umol 6ft = 471 umol

Dude I'm loving it go for it, let rip...

@nevergoodenuf wow yeah, great to find someone else tinkering with the same heatsink, I see you have 6 of the copper heat pipes, I need to grill the shop keeper and see if he's had me over for a 400w The position of the cobs I totally get, maybe even more spacing would be even more optimal...

I'll double check in the morning, I agree it does seem crazy.

I'm with you, I'm going to go back to my workings to get them both dialed in just right. thank you again @KobKits

Well then you know how good the heatsink is and I'm sure you will have thought to yourself while staring at it, how did they get the copper heat pipes into the fins, how were they attached, what was painted in what order, how did they get the copper flat in the block. How do all the little bent...

Thank you @KobKits! I do struggle to understand why Mean Well even put on a voltage dial if its best cranked to full, assuming thats what it is for sure. The current I can understand is useful, I wonder what the adjustable range is, I'll get the multi meter on it in the morning and make sure I'm...

Thats a bit harsh buddy, the same heatsink was used as my starting point because they are easily available at the local market. I literally walk out of my door and there is a market with over 100 little shops and every single one of them stocks the same range for this model. Just search google...

Do we know what make and model the diodes are in the mars?

Yeah the drinking can easily get out of control, my fist few years here were a mess. When I'm in the south I've never been as far north as Guizhou but it sure looks beautiful. Hit me up on your next visit I'll bring you gifts.

CFL's typically run at about 0.4 umol per Watt so you you will be much better with LED as the newer led systems are now getting over 2.2 umol per Watt. The operating temp is 85 - 105F or 638 BTU for the Mars 2 - 400 150F to me feels hot but is bearable to touch (its different for everyone)

A Super HPS @ 250w = 410 umol so yes its about the same in terms of output

@edwardvanhale whats your budget and the size of room you want to cover?

From what i read the mars 2 - 400 uses 177W, and only puts out 440 umol at 45cm.

@edwardvanhale I got you... Operating Temperature: 85°F -105°F (30°C - 40°C) BTU: 638 https://www.mars-hydro.com/400-Watt-LED-Grow-Lights-Greenhouses-Mars-400.aspx

I really want something that at-least looks more pro and something less fiddly for my fat fingers to connect would be nice. What do you think of these http://global.wago.com/en/products/product-catalog/pcb-terminal-blocks-connectors/pcb-terminal-blocks/smd/index.jsp and the brochure is here...

It would indeed haven been super impressive if I had hand soldered them by hand! I admit I had a friends robot do the work for me, kinda cheating I know. So turn the Voltage down till the light goes out then then tweak it up a little? and leave the current on its max setting? Any advice on how...

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