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I think the difference is I am using a Mean Well 1050 driver, I thought it was the 700 but realized I had that somewhere else. As for spread, I have them spaced out more and facing down at a 45 instead of straight on. I think those 2 things spread the light out more, and the 1050 driver pushes up the PAR, but fans are required to keep them cool.
ahh. ok. that makes me feel alot better. thought it might have been something i had done. ok. so ill just shoot for 1500ish on screen and see how that goes. thanks for clearing that up. cant wait to see next week pic. should have some bragging rights type growth. lol
You can get a nova extreme model 1124 or 1127 and replace the bulbs with 3000k, and measure it for par.
I have that exact light fixture on my hospital tank, but I don't have the exact bulbs (3000k) to do testing on. Do you have a prefered vendor for those bulbs Santa Monica?
i believe these would work.Quote:
Originally Posted by Ace25
http://www.1000bulbs.com/category/f24t5 ... bes-3000k/
Ok, I will pick up a couple bulbs and do some PAR testing. That spectral output picture comparison was great. I hope it didn't get overlooked being on the end of the last page because that is a great comparison shot for spectrum between CFL and LED. I have that same type of spectrometer at home, blue triangle shaped box, and it is good for what you just showed, just not good enough to really get good details.
Picture from today just for the heck of it...
http://farm4.static.flickr.com/3312/...c16df2f5_b.jpg
This is my next project, new controller.
http://farm4.static.flickr.com/3492/...a5eeb470_b.jpg
yup. thats the one. and i only use it for comparison. claims you can calibrate it using a fluorescent tube and setting the green bar at 546nm i believe. but the scale on mine doesnt move or i have yet to figure out how to move it.
anyway. it works enough for what i needed. but like you said. not great on detail.
ahh. another project. going to do a build thread somewhere on it?
and im biting nails waiting on par data from those bulbs in that fixture. from other post im guessing its roughly 1000. but thats from tanks using a similar fixture but different bulbs. thanks for doing this and sharing.
Those darker areas of growth are needing more PAR.
Looking at Day 15 next to Day 16, you can see the "dark areas" going away daily. The dark areas are the brown slime stuff, which has been a typical part for me for a new screen maturing.
Notice the dark areas at the end of the screen and notice it going away the next day.
http://farm3.static.flickr.com/2788/...03d4930c17.jpghttp://farm4.static.flickr.com/3312/...ddc16df2f5.jpg