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View Full Version : How Far do you guys keep your halides off the Surface?

nysbadmk8
12/10/2006, 11:20 AM
What kind of bulb? Wattage? Etc. Im keeping my 400w at about 8-10in
volivier
12/10/2006, 11:31 AM
<a href=showthread.php?s=&postid=8719697#post8719697 target=_blank>Originally posted</a> by nysbadmk8
What kind of bulb? Wattage? Etc. Im keeping my 400w at about 8-10in

measuring from the bulb to the top of the water? 10" I have 135 gal. tank with 3 400 W 10K halide and 2 72" VHO actinic. runing 12 hour on the vho actinic and 7 on the halides, have them on timers 30 min to 1hr apart to start and shut off.
Sk8r
12/10/2006, 11:42 AM
9" for a 250w 10000k single bulb w actinics.
Brewen
12/10/2006, 11:50 AM
8" for 3-250w 14000k. 4" for the 4-t5 54w 2 blues 2 10000k whites.
PL-Reef
12/10/2006, 12:14 PM
8" for 2 250w 14k, 3" for 2 54w blue plus T5. over a 75g
fishfanatic06
12/10/2006, 12:37 PM
6 inches from the water's surface. 175 watt 14k bulb. I have no heat issues. 6 inches is the closest I will get though.
Kip
12/10/2006, 01:00 PM
9" from bottom of the bulb to the water surface ..... 400w EVC 10k
Ti
12/10/2006, 03:36 PM
6" 250W
jman77
12/10/2006, 03:59 PM
about 3 and 1/2 for a 150w reeflux 10k & Iwa 6700k HQI DE :)

no chiller either .... just run 4 pc fans that blow acros where the lights are ;)
Jar*Head
12/10/2006, 08:13 PM
24 - 28" from the surface, 1x1000w 10k ushio on light mover
Joe Cool
12/10/2006, 08:32 PM
about 4" from my 150w 14k over my 24g with no heat issues at all.
concept3
12/10/2006, 09:25 PM
10 inches, 250w
RokleM
12/10/2006, 09:41 PM
14" from the frame 15" from surface, will be back to about 13" from the frame in a couple of weeks.

180 gallon (6x2x2)

400w BlueWave7 HQI, 2x LumenMax2's, 2x Radium's
SDguy
12/10/2006, 09:52 PM
8-9" from bulb to water surface. 250W DE phoenix 14K in PFO pendants on icecaps eballasts.
kwl1763
12/11/2006, 09:41 AM
Depending on how old the bulb is from 15 to about 6". 15" when they are new to 6 months, 12" 6 months to 12 months. 9" 12-18 months, 6" 18-24 months. 250s 3 SE 10ks 2 DE 20ks
peezee
12/11/2006, 10:11 AM
15" for 2x250w 20k AB bulbs over a 50gallon.
snslarison
12/11/2006, 11:41 AM
2x 175W over a 75g about 7" off the water surface.