April 12,almost ready, the top leaves dried out and crumbled up, while most of the lower buds where still white, strange.
April 2, With about 10 days to go, the buds are getting thicker, looking pretty good. But I still don't know if CXB is a good alternative for the multi color led boards, for that a fresh Set-Up is needed.
March 11, The plants really like the CXB3590, please note it in the picture, the lens is still simply clamped to the heatsink, it is fine like this :-). Flowers are finally booming, but because they started flowering under a less efficient panel, I won't get a record breaking harvest, but I will get a good impression of the CXB capabilities. There are 4 weeks to go.
Here is the COB again, now with a Ledil Stella-HB silicone lens, it give a better spread of the light. So, for this set-up this is "the panel".... The plants seem to love the change, the measured amount of light is over 50% higher than with the XTEAWT, while the power consumption has dropped to 85 watt... (plus about 10 for the supply). The light is, however, mostly in the yellow/green region and I would prefer more Red, maybe I'll repeat the test later with a lower colortemp version, at the expense of losing some Lm/watt.
Here is the CXB with a Ledil AngelinaW reflector mounted on a 15*15 cm heatsink. This stuff might very well be the future, but for a panelbuilder, there won't be much left to ""build" :-)
March 8, decided to make a change, the XTEAWT proto goes out and I'll continue this Set-up with a single CXB35900N0HCD35H. This is a remarkable (or is Unbelievable a better word?) Led COB array, running at 37 Volt, at 2.4 Amps, that is 85 watt, it produces 12.000 lumen, with a color temp of 3.500 K. That is over 140 Lm/watt, even at 85 degrees temp! Absolutely amazing.
March 2, the plants look rather well, but..... I switched to flowering February 6, 4 weeks ago. With this kind of wattage, flowers should be bigger by now, do you agree?
February 4, 2016, I still want to know how well a White panel would perform, so I've build this prototype with XTEAWT Cool White, Warm White and some XPE2 Reds. The Whites can be loaded up to 5 watt, that's why a tiny panel like this has a total power comsumption of about 130 watt, power supplies included. There is a rather strong fan installed to blow the heat away. The plants have already done their vegging under a normal HansPanel, the test of the prototype is starting today :-)