new to leds how many for 40b

S13<3 · 07/03/2011, 07:02 PM

like title says how many cree xp-g/e in equal proportion would i need to light say half a 40breeder for sps, i would like the other have less light for zoos, rapid led seems to have good deals, would 12 be enough? the widest lens is 55degrees for xp-e and 65degrees for xp-g

dlp211 · 07/03/2011, 07:23 PM

I would go with 36 total LEDs and I would put 24 on the SPS side and 12 on the other side.

JAustin · 07/03/2011, 07:55 PM

I would do 36 as well with 60 degree optics. I would run 12blue XPE, 12 royal blue XPE, and 12 cool white XPG. I've got 82 over my 120g and par is 200+ at the bottom of the 24" depth.

XPE and XPE share the same optics. you can get them online at some websites. I got mine through a group buy website for LED's.

Good luck!

Oh, and add 12 more if you can...dim them if you must but better to have more and dim than not have enough.

BrassMonkey · 07/03/2011, 08:12 PM

that combo would seem to blue. im running 18 cool white 18 royal blue 6 blue and with white at 1.3A and blue at 750ma its a phoenix 14k kinda look. no optics unless you want to hang your fixture 15 inches above the water. dont think your gonna burn anything up with 36 leds. will let you know if i see any bleeching,(just set it up friday)
keep the lower light coral on the far sides.

imagex · 07/03/2011, 08:15 PM

24 no optics with xp-e and xp-g would be fine.. theres no need for 60 deg optics on a 18" depth tank with the xp series.. 12 for half the tank would be enough..

Robert Patterso · 07/03/2011, 08:37 PM

Not to hijack here, but been thinking of switching from MH to LED's. Other than they require less power and produce less heat that is the extent of my knowledge of led's. So some help and suggestions would be greatly appreciated. Odviously I would like to build my own set-up if possible. spending a couple grand for a set-up is out of the question. Again don't mean to hijack here..

Thanks

S13<3 · 07/05/2011, 09:20 PM

ok im starting out with the 12 led, ive pieced everything together on the rapidled website, but cant decide if i should get the optics or not theyre now offering 80 degree optics, does it really narrow the light that much? the 40breeder has been ditched for a 18x18x8 so 12 should light it no problem just dont know about the optics, as far as dimming i dont really care for it, i just want on/off, its safe to put the leds on a timer right?

07/03/2011, 07:02 PM	#1
S13<3 KeepItSuperSimple Join Date: Oct 2010 Location: S Fl. Posts: 797	new to leds how many for 40b like title says how many cree xp-g/e in equal proportion would i need to light say half a 40breeder for sps, i would like the other have less light for zoos, rapid led seems to have good deals, would 12 be enough? the widest lens is 55degrees for xp-e and 65degrees for xp-g __________________ 40B Peninsula+20L Sump Eheim 1260 return -1 800GPH ebay pump -1 koralia 750 Tap Water all day!

07/03/2011, 07:23 PM	#2
dlp211 Registered Member Join Date: Apr 2011 Posts: 591	I would go with 36 total LEDs and I would put 24 on the SPS side and 12 on the other side. __________________ Standard 180 w/C2C overflow 40B Sump, 40B refugium w/DSB SRO 3000 internal, BRS Carbon Rx 100# BRS Pukani, 40# Marco

07/03/2011, 08:37 PM	#6
Robert Patterso Registered Member Join Date: Aug 2006 Location: Denton, Tx Posts: 711	Not to hijack here, but been thinking of switching from MH to LED's. Other than they require less power and produce less heat that is the extent of my knowledge of led's. So some help and suggestions would be greatly appreciated. Odviously I would like to build my own set-up if possible. spending a couple grand for a set-up is out of the question. Again don't mean to hijack here.. Thanks __________________ Way to many projects, not enough money and even less time Current Tank Info: 140 ssb, 75g sump ect. xp2000 cone skimmer, 400w XM 20k's in sm. Lumenbrites, ATS over refugium

07/05/2011, 09:20 PM	#7
S13<3 KeepItSuperSimple Join Date: Oct 2010 Location: S Fl. Posts: 797	ok im starting out with the 12 led, ive pieced everything together on the rapidled website, but cant decide if i should get the optics or not theyre now offering 80 degree optics, does it really narrow the light that much? the 40breeder has been ditched for a 18x18x8 so 12 should light it no problem just dont know about the optics, as far as dimming i dont really care for it, i just want on/off, its safe to put the leds on a timer right? __________________ 40B Peninsula+20L Sump Eheim 1260 return -1 800GPH ebay pump -1 koralia 750 Tap Water all day!

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07/03/2011, 07:55 PM	#3
JAustin Acropora Nut Join Date: Jul 2008 Location: Oklahoma City Posts: 1,628	I would do 36 as well with 60 degree optics. I would run 12blue XPE, 12 royal blue XPE, and 12 cool white XPG. I've got 82 over my 120g and par is 200+ at the bottom of the 24" depth. XPE and XPE share the same optics. you can get them online at some websites. I got mine through a group buy website for LED's. Good luck! Oh, and add 12 more if you can...dim them if you must but better to have more and dim than not have enough.

07/03/2011, 08:12 PM	#4
BrassMonkey Registered Member Join Date: Apr 2006 Location: Palm Beach Posts: 950	that combo would seem to blue. im running 18 cool white 18 royal blue 6 blue and with white at 1.3A and blue at 750ma its a phoenix 14k kinda look. no optics unless you want to hang your fixture 15 inches above the water. dont think your gonna burn anything up with 36 leds. will let you know if i see any bleeching,(just set it up friday) keep the lower light coral on the far sides.

07/03/2011, 08:15 PM	#5
imagex Registered Member Join Date: Dec 2009 Location: Richardson tx Posts: 125	24 no optics with xp-e and xp-g would be fine.. theres no need for 60 deg optics on a 18" depth tank with the xp series.. 12 for half the tank would be enough..