MH pendant

N-dog · 01/10/2010, 08:03 PM

i have a 20 tall, and i was wondering if this would work

http://www.fishneedit.com/75w-metal-...nt-ligh75.html

Vivalashay · 01/10/2010, 08:25 PM

I would spend the extra $30 and get the 150 watt light

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P-Daddy · 01/10/2010, 08:27 PM

+1, money spent now is money saved on upgrades later

Losungen · 01/10/2010, 10:19 PM

Not only that, but bulb choices will be a lot better and easier to find locally if you go with the 150w. If you want a 14K look, order his 20ks, they look a little closer to a phoenix then say an ushio 20K. I'd also maybe order a spare bulb too, his are cheap as dirt and aren't bad bulbs really. I've had several of his fixtures and every electronic ballast of his has caused me problems on channel 3 of all my tvs, easily fixed with a cheap signal amplifier, just something to keep in mind.

flare1185 · 01/10/2010, 11:13 PM

I got a few questions about the bulbs, I'm a newbie so I'm hoping for some enlightenment, what are the different between the 14k,20k, and so on I know its the spectrum or kelvin measurement but how do I go about choosing it for corals that I wanna keep say if I wanna keep clams and sps. Will choosing that lighting for that effect the lps corals? Or just put those at a lower level of the tank. Thanks

N-dog · 01/12/2010, 09:32 PM

my real concern is electrical cost

N-dog · 01/12/2010, 09:45 PM

I did some calculations, and a 150w MH running 8 hours a day comes out to 96kwh per month. Now Excel charges $0.12/kwh so thats $11.52 per month. Does that seem right?

spleify · 01/12/2010, 10:21 PM

A higher kelvin bulb(20K) usually has a lower PAR rating than say a lower kelvin bulb(10K). The higher the kelvin the bluer the bulb will be. It comes down to personal prefference on what you want. A lot of folks go with a 14K bulb to get the middle of the road bulb. Good growth and good color. You can always add some supplemental actinic bilbs to get a bluer look.

HTH

bertoni · 01/12/2010, 11:35 PM

The 70 watt bulb would be fine for a lot of corals, but maybe not the most light-demanding animals, IME. I put a 175 W over my 20g. It was an expensive fixture, though, a LumenMax.

N-dog · 01/15/2010, 07:03 PM

i was thinking mostly LPS, and a few SPS high in the tank, with maybe 2 t5 ho

bertoni · 01/15/2010, 07:11 PM

I think that 2 T5 bulbs with good reflectors should be okay for a few well-placed high-light SPS.

01/10/2010, 08:03 PM	#1
N-dog Registered Member Join Date: Dec 2007 Posts: 314	MH pendant i have a 20 tall, and i was wondering if this would work http://www.fishneedit.com/75w-metal-...nt-ligh75.html

01/10/2010, 08:25 PM	#2
Vivalashay Registered Member Join Date: Dec 2009 Location: Norfolk VA Posts: 39	Re:MH pendant I would spend the extra $30 and get the 150 watt light Sent from my Droid using Tapatalk

01/12/2010, 10:21 PM	#8
spleify Registered Member Join Date: Dec 2003 Location: Denver, Colorado Posts: 9,579	A higher kelvin bulb(20K) usually has a lower PAR rating than say a lower kelvin bulb(10K). The higher the kelvin the bluer the bulb will be. It comes down to personal prefference on what you want. A lot of folks go with a 14K bulb to get the middle of the road bulb. Good growth and good color. You can always add some supplemental actinic bilbs to get a bluer look. HTH __________________ Make it a Great Day!!!! Current Tank Info: 60 gal SPS cube, with 25 gal refugium, 400W MH, DIY Lumenarc III, DIY skimmer, DIY stand and canopy. 40 breeder LPS with 40 gallon sump, DIY stand, 250W MH

01/12/2010, 11:35 PM	#9
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	The 70 watt bulb would be fine for a lot of corals, but maybe not the most light-demanding animals, IME. I put a 175 W over my 20g. It was an expensive fixture, though, a LumenMax. __________________ Jonathan Bertoni

01/15/2010, 07:11 PM	#11
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	I think that 2 T5 bulbs with good reflectors should be okay for a few well-placed high-light SPS. __________________ Jonathan Bertoni

01/10/2010, 08:27 PM	#3
P-Daddy Registered Member Join Date: Jul 2008 Posts: 118	+1, money spent now is money saved on upgrades later

01/10/2010, 10:19 PM	#4
Losungen Registered Member Join Date: Oct 2009 Location: Calgary, AB Posts: 110	Not only that, but bulb choices will be a lot better and easier to find locally if you go with the 150w. If you want a 14K look, order his 20ks, they look a little closer to a phoenix then say an ushio 20K. I'd also maybe order a spare bulb too, his are cheap as dirt and aren't bad bulbs really. I've had several of his fixtures and every electronic ballast of his has caused me problems on channel 3 of all my tvs, easily fixed with a cheap signal amplifier, just something to keep in mind.

01/10/2010, 11:13 PM	#5
flare1185 Registered Member Join Date: Nov 2009 Posts: 473	I got a few questions about the bulbs, I'm a newbie so I'm hoping for some enlightenment, what are the different between the 14k,20k, and so on I know its the spectrum or kelvin measurement but how do I go about choosing it for corals that I wanna keep say if I wanna keep clams and sps. Will choosing that lighting for that effect the lps corals? Or just put those at a lower level of the tank. Thanks

01/12/2010, 09:32 PM	#6
N-dog Registered Member Join Date: Dec 2007 Posts: 314	my real concern is electrical cost

01/12/2010, 09:45 PM	#7
N-dog Registered Member Join Date: Dec 2007 Posts: 314	I did some calculations, and a 150w MH running 8 hours a day comes out to 96kwh per month. Now Excel charges $0.12/kwh so thats $11.52 per month. Does that seem right?

01/15/2010, 07:03 PM	#10
N-dog Registered Member Join Date: Dec 2007 Posts: 314	i was thinking mostly LPS, and a few SPS high in the tank, with maybe 2 t5 ho