Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Help with lighting a 150 (http://www.tropicalfishkeeping.com/saltwater-aquarium-equipment/help-lighting-150-a-11644/)

chriscolumbus 02-07-2008 06:08 PM

Help with lighting a 150
 
I am upgrading my tank... I have a 29 going to a 150.. yeah big jump.. the aquarium has 8 x 55 W power compacts.. I want a "all in one" light for it.. will this light be sufficient to support whatever I plan on putting in there..?? I hope to eventually have LR, FISH, CORALs soft and hard..

http://cgi.ebay.com/72-1134W-Metal-H...ayphotohosting


7.56w per gallon not sure of lumens but Im sure with the 3 250W MH its good.. am I right??

bettababy 02-08-2008 01:30 PM

Let me check with my husband before I say for sure, but I'm thinking that provided you have rockwork built high enough and strategiacally choose & place your corals when adding them, yes... I'm pretty sure that's enough.

I'll stop back in later tonight after I've had a chance to pick his brain for you.

Remember though, your lighting requirements are still going to vary somewhat depending on what animals are in the tank. Different corals need different levels of lighting, and a 150 isn't going to be deep enough to provide low enough lighting for certain things with that fixture. One option is to provide shade using rock structure, another is to vary the lighting in the tank, using a weaker light in front of or behind a stronger one.

bettababy 02-08-2008 11:37 PM

Hello, this is Dawn's husband.
The light you have chosen is perfectly fine for what you want to do. It will give you the light necessary to keep just about any coral you want to. One thing to think about and remember is that most lighting manufacturers will have a warranty clause that will state that the warranty is void if the light fixture is used over open water. To keep with warranty the fixture would have to be used over an aquarium with a glass cover. Unfortunately the glass cover will block out and refract a lot of light. You will have to decide if you want to maintain the warranty or void it so that you can get the maximum amount of light you can. I personally would use it over open water and not worry about the warranty.
When using metal halide it will most likely be necessary to use a water chiller. For a 150 gallon tank you will want to use a 1/2 horse power chiller. Some people will tell you that a 1/4 hp chiller will work, but it is borderline and not worth the risk of it not being enough.
When stacking your rock with that much light over the tank, don't stack the rock too close to the surface. You need to allow room for corals to grow. In addition most corals are going to have a rock that they are attached to, or their skelleton will give them height. Most corals will bleach out if they get too close to the halides.
You should also create shaded areas when stacking your live rock so that you have areas to put non-photosynthetic corals that do not care for all the light.
Once again, it is a good choice. Might I suggest using 14000 Kelvin bulbs as opposed to standard 10000 Kelvin bulbs. Stony corals take on a lot of color and so do zoanthids and mushroom anemones.
Hope this helped.


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