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View Full Version : 150 or 250W DE for 20" water depth?

banditpowdercoat
06-06-2009, 03:25 PM
I am still unsure of how much light I am going to need. 60" tank length, 24" wide, and 20" water depth. Would 2 250W be enough? Weighing options here. I like a canopyless tank, but lighting is more expensive. I am considering a Coralife Aqualight Pro 48" light. 2 95W PC, and 2 250W DE. But tank is 5', light is 4'. Would it be enough? So many choices, but not enough money
SeaHorse_Fanatic
06-06-2009, 03:32 PM
A 5' long tank is tricky to light. Personally, I would look at a lighting system with 2 x 250w SE going lengthwise to give the most coverage. DE lights are more focused & don't have good spread compared to SE.

I have a 4' & 6' Aqualight Pro & love the all-in-ones, but they are over a 4' and 6' tank, respectively.

At 20" deep, you could get away with lower wattage but not sure if you're going sps or what?

Anthony
banditpowdercoat
06-06-2009, 03:36 PM
Interesting on the spread of DE/SE. I was wondering that. And as far as SPS and such, when I built my first tank, it was strictly a FOWLR, now it has Monti's, Clams, etc. I wouldn't mind a couple birdsnest and the easier to keep SPS in the new tank, but not ready fro the "finicky" ones yet.

So, with the SE, you are meaning running the bulbs lengthwise with the tank?
fkshiu
06-06-2009, 03:46 PM
Interesting on the spread of DE/SE. I was wondering that. And as far as SPS and such, when I built my first tank, it was strictly a FOWLR, now it has Monti's, Clams, etc. I wouldn't mind a couple birdsnest and the easier to keep SPS in the new tank, but not ready fro the "finicky" ones yet.

So, with the SE, you are meaning running the bulbs lengthwise with the tank?

Yes, I run 2 x 250W SE over my six-footer and no one ever seems to notice.
Tomjay
06-06-2009, 04:20 PM
I have the Giesemann Moonlight Infiniti 48" 2x250w DE HQI + 4X54W T5 HO my tank dimension 160 cm x 60 cm x 60 cm and the fixture is suspended 18” above and everything is happy
bowkry
06-06-2009, 04:35 PM
on my 60 in tank I have 2x250 and 1x400 mh and 4x65 watt compac attinics but mine is a little bit deeper (25 in)
alamo
06-06-2009, 04:44 PM
You need 1 MH per 4 square feet(2'X2'). You are close enough to get away with 2, but make them the 250W(for 150W, I would go with 3) and hang it off the ceiling a little higher.(the reason you need 250W)
Myka
06-06-2009, 10:39 PM
What kind of corals, anemones, and clams do you plan to keep? It's impossible to suggest lighting otherwise. :)
lorenz0
06-06-2009, 10:48 PM
if i were buying a MH fixture that compares to the coralife this would be my choice:

http://www.current-usa.com/outerorbithqit5ho.html

personally i think that power compacts are out dated and you will get way better results supplimenting with the t5's. This is actually the fixture i considered for myself
banditpowdercoat
06-06-2009, 11:33 PM
What kind of corals, anemones, and clams do you plan to keep? It's impossible to suggest lighting otherwise. :)

To be honest, I don't know. Some SPS, some LPS, some softies. I have a Crocea clam allready, who may be moving into the new tank. I wouold like a Birdsnest or 2, Monti's, couple different colored "sticks" and small Zoa's
Myka
06-07-2009, 01:12 AM
If cost is an issue, then try to find a used setup for sure. I agree that SE is probably a better choice for you because it spreads light better, but be careful about the ballast and bulb combination you choose because there are some very poor 250w SE combinations. Another thought would be to use 175w electronic ballasts with Iwasaki 15K SE bulbs, this combo is a "par breaker" and puts out more par than many 250w setups.
fishytime
06-07-2009, 01:18 AM
20" depth?.....T5

http://i116.photobucket.com/albums/o19/fishytime/IMG_0001-1.jpg


:mrgreen::mrgreen:
JDigital
06-07-2009, 01:20 AM
^^ It just does look right without that Frogspawn... :neutral:
banditpowdercoat
06-07-2009, 02:15 AM
How would 2 Lumenmax 3 DE 250W fair? With Electronic ballast, say a galaxy 2x250W?
Myka
06-07-2009, 05:07 AM
^ Excellent choice provided you take care to choose bulbs that would perform well on the 250w electronic ballast. The Gieseman 250w DE 13000 and 14,500 K have high output on an electronic ballast. It's a shame the dang bulbs are so expensive. Giesemann's DE perform much better than their SE.

Check Sanjay's lighting guides for other bulb choices. As far as electronic ballasts go they all perform very similar no matter if they are IceCap or Galaxy according to Sanjay's testing.