HQI users question

Nanook01 · 07-11-2001, 01:52 AM

Hi, I have had a pair of HQI 250w PFO mini-pendants for a few months now, up until now I have had no corals, but as I get ready to start stocking corals I am curious as to how high you mount your pendants and why?

I have mine about 12" off the water of my 120g tank, it seems that I get a nice spread that way. Is this too far over the water, will I lose PAR by keeping them elevated this far? My temp in my tank has ranged from 80-84 degrees with 2 Icecap fans, I was wondering that, if they needed to come closer to the water, if my temp would rise more??

Thanks,

Nanook

naser · 07-11-2001, 11:31 AM

id say lower it like 2 or 4 inches depending on what youd like to keep on the bottom?

**Ninong** · 07-11-2001, 12:46 PM

I agree with Naser that you can probably lower them 2 or 3 inches without affecting the light spread or raising your water temperature very much. Anything closer than that will probably result in inadequate light spread and possibly increased water temp.

Ninong

PerryinCA · 07-11-2001, 05:10 PM

For greatest possible intensity, I keep mine about 4-5" off the water. But, for the best mix of spread and intensity, go for 7-10, depending on placement.

-Perry

naser · 07-12-2001, 02:27 AM

im stepping up to a dual 400 watt system.. i figure with 400 watts you can have them anywhere almost.. you know since i only have a 55 gallon reef...

07-11-2001, 01:52 AM	#1
Nanook01 Tenant Join Date: Mar 2001 Location: st. louis, MO Posts: 89	HQI users question Hi, I have had a pair of HQI 250w PFO mini-pendants for a few months now, up until now I have had no corals, but as I get ready to start stocking corals I am curious as to how high you mount your pendants and why? I have mine about 12" off the water of my 120g tank, it seems that I get a nice spread that way. Is this too far over the water, will I lose PAR by keeping them elevated this far? My temp in my tank has ranged from 80-84 degrees with 2 Icecap fans, I was wondering that, if they needed to come closer to the water, if my temp would rise more?? Thanks, Nanook __________________ The wind blew, the **** flew and then they came two by two.

07-11-2001, 12:46 PM	#3
Ninong Moderator Join Date: Jun 2000 Location: Louisiana Posts: 20,330	I agree with Naser that you can probably lower them 2 or 3 inches without affecting the light spread or raising your water temperature very much. Anything closer than that will probably result in inadequate light spread and possibly increased water temp. Ninong __________________ Ninong

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07-11-2001, 11:31 AM	#2
naser super-reefer Join Date: Feb 2001 Location: SAN DIEGO, CA Posts: 1,908	id say lower it like 2 or 4 inches depending on what youd like to keep on the bottom?

07-11-2001, 05:10 PM	#4
PerryinCA Governor Join Date: Jul 2000 Location: Folsom, CA Posts: 2,103	For greatest possible intensity, I keep mine about 4-5" off the water. But, for the best mix of spread and intensity, go for 7-10, depending on placement. -Perry

07-12-2001, 02:27 AM	#5
naser super-reefer Join Date: Feb 2001 Location: SAN DIEGO, CA Posts: 1,908	im stepping up to a dual 400 watt system.. i figure with 400 watts you can have them anywhere almost.. you know since i only have a 55 gallon reef...

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