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I have updated my signature. I also wonder at what height does most of the heat transfer come in at. I will be taking mesurements to try and find out. SMooTH

Hello I have just installed two 250 watt 20K metal halide bulbs installed on a hanging fixure above the aquarium. It`s about 12 inches above the water should it be lower or higher. Any ideas on what kind of corals I should be able to keep. Thanks SMooTH

please help with more info. Thanks SMooTH

I will be using a m-58 ballast

yes I ordered the radium bulbs. Have you herd anything about them.

I thought the 20Ks were blue.

I ordered two 250 watt metal halide bulbs for my 55 Gallon suppose to be a reef tank hopefully one day. What else will I need in the light department? I have the hood installed just waiting for the bulbs to arrive. I am using four 40 watt fluorscents presently. (only two worked cheep fixure) Any...

I am using a M-58 250 watt ballast it`s the type with out the case its a core type transformer with a capicator I made the encloser and wired it myself.

What I ment is are they worth the extra few bucks. I was thinking the 20Ks would not need antics.

Are the 20k bulbs all that or what. I need new 250w bulbs for a 55g any suggestions

do you have to use the same color bulb on both sides

I am not sure how much blue is recommended

Hello I am looking for suggestions I need to order two 250 watt MHs for a 55 gallon tank please inform on color temp. I am thinking about the 20,000k bulbs and good places to order from. Thanks

Keep me informed on the pulley system. My e-mail addresse is lvvb@attbi.com

So you dont think I will have any problems. Plus I like the Idea of buying lights that could be used in a larger tank, which I am already thinking about. I will be building a hanging light system. Do you think I could could still use the glass top on top of the aquarium would the light go...

Thanks for the reply What about the heat generated by the 250s? I may have a problem anyways because my aquarium is around 79 to 80 degrees with out a heater. Do you have to use a chiller? I wanted to try and stay clear of a chiller. Thanks SMooTH

Hello I an going to build a light system which will have two MHs and two compact flouresents for a 55 gallon tank. any tips or advice are welcome Thanks

Hello I an going to build a light system whick will have two MHs and two compact flouresents for a 55 gallon tank. any tips or advice are welcome Thanks :confused:

Thanks for the reply. I have four 40 watt floursents/w two of them not working due to bad fixures. I just want to do it right this time. I will look into the VHO`s Thanks again SMooTH

ok thanks for your thoughts. smooth