MH lighting for 65 Gallon (48x18x18)

bombtrack · 11-04-2007, 01:58 AM

Hi, i'm looking at getting two 150 Watt metal halide lamps to go over my 4 ft tank.

Will the gaps cause any dark areas? i want an even light across the whole tank.

foamerdave · 11-04-2007, 02:26 AM

One MH pendent lights a 2x2 square so you should be fine. Just watch the heat they dump into the tank ( I have a 20g nano reef that 1 150w will heat the tank up to 86deg in no time) to you almost have to run "open top" to prevent glare and heat build up. Just means no fish that jump and a lot of water top offs. 4.6 wpg of MH lighting should make for a nice high tek tank over all
Another option is to run a t-5 ho set up much less heat less to run very even lighting good "punch" into tanks less the 24in deep and with the better ones out there with single re-factors per bulb you can run less wpg but get the same results as you would with a higher w MH

**epicfish** · 11-04-2007, 02:37 AM

No, with decent reflectors, you will be fine with that setup.

medicineman · 11-04-2007, 03:28 AM

You just hang them a bit high at 12" or so, fine tuning to your desire. Never hang too low or else it will create more problem. Two 150 pendants would be nice for coverage. MH is all about intensity. You can even escape well enough with 70W ones if you do not after extreme high light.

bombtrack · 11-04-2007, 06:06 AM

Sounds good, i'll make sure i hang them high and keep an eye on temps.

11-04-2007, 01:58 AM	#1 (permalink)
bombtrack Algae Grower (View User Tanks) PTrader: (0) Join Date: May 2007 Location: Australia Posts: 7	MH lighting for 65 Gallon (48x18x18) Hi, i'm looking at getting two 150 Watt metal halide lamps to go over my 4 ft tank. Will the gaps cause any dark areas? i want an even light across the whole tank.

11-04-2007, 03:28 AM	#4 (permalink)
medicineman Wannabe Guru (View User Tanks) PTrader: (7) Join Date: Sep 2005 Location: Jakarta - Indonesia Posts: 1,372	You just hang them a bit high at 12" or so, fine tuning to your desire. Never hang too low or else it will create more problem. Two 150 pendants would be nice for coverage. MH is all about intensity. You can even escape well enough with 70W ones if you do not after extreme high light. __________________ 700gal sunken garden. Screened sunlight and 1 x 400W MH. CO2 injection. Wonder-Gro series ferts. 260gal planted open top tank#1. 3 x 150W MH lighting+ 4 x 40W T12. CO2 injection. Wonder-Gro series ferts. 260gal planted open top tank #2. 3 x 150W MH lighting + 4 x 30W T5. CO2 injection. Wonder-Gro series ferts. Wonder-Gro series ferts (available @GLA) http://i33.photobucket.com/albums/d6...Brosurcopy.jpg

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11-04-2007, 02:26 AM	#2 (permalink)
foamerdave Algae Grower (View User Tanks) PTrader: (5) Join Date: Apr 2007 Location: quakertown pa Posts: 78	One MH pendent lights a 2x2 square so you should be fine. Just watch the heat they dump into the tank ( I have a 20g nano reef that 1 150w will heat the tank up to 86deg in no time) to you almost have to run "open top" to prevent glare and heat build up. Just means no fish that jump and a lot of water top offs. 4.6 wpg of MH lighting should make for a nice high tek tank over all Another option is to run a t-5 ho set up much less heat less to run very even lighting good "punch" into tanks less the 24in deep and with the better ones out there with single re-factors per bulb you can run less wpg but get the same results as you would with a higher w MH

11-04-2007, 02:37 AM	#3 (permalink)
epicfish Planted Tank n00b (View User Tanks) PTrader: (89) Join Date: Sep 2006 Location: Los Angeles, CA Posts: 7,359	No, with decent reflectors, you will be fine with that setup.

11-04-2007, 06:06 AM	#5 (permalink)
bombtrack Algae Grower (View User Tanks) PTrader: (0) Join Date: May 2007 Location: Australia Posts: 7	Sounds good, i'll make sure i hang them high and keep an eye on temps.

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