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Thanks for the info. If I have to replace the ballast I was thinking of going with an electronic ballast instead. most of them are expensive ($150-$200) but I found a couple of them that were suspiciously cheap ($50-$60). They are from international stores online and on ebay. Is there a way to tell if they are any good? here is one for $50: http://cgi.ebay.com/INNOVA-INC-150W-MH-HALIDE-ELECTRONIC-BALLAST-NEW_W0QQitemZ310195598936QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4839193658 and here is another one for $53: http://www.reefshops.com/150w-metal-halide-e-ballast.html The OEM replacement for my exact ballast in ($118): http://cgi.ebay.com/150W-Coralife-HQI-Metal-Halide-Replacement-Ballast_W0QQitemZ300357552265QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item45eeb48889 If I replace the ballast with the OEB then I only would get one ballast. if I was going to replace it with the electronic one then I might buy 2 of the cheapo ballasts and replace both lights in the hood.

hopefully not, the replacement is like $120 Last night I opened it up and everything is pretty much molded in there. There was a piece of cardboard under the cover that was a little flaky. I cut of all the loose edges from it and tightened everything back up. we'll see if this improves the noise this evening.

I got this used MH hood a few weeks back. it runs great, but one of the two ballasts is much noisier than the other. its starts out fine but as it warms up it has this laud buzzing noise. I thought it was something loose, but it seems that the casing is on tight. anyone has a similar issue and knows if there is a way to fix it?

I'll take them if they are reef safe

PM sent for: 2 bulb 48 inch atentic lighting system with electronic ballast. Two 460 atentic bulbs, end caps, reflectors, and wiring. Sale for 30.00 OBO 20 Foot long water changing system (similar to the python system) 10.00 Mag 5 Pump: 15.00 Extra top off unit Retails for 60.00 sale for 20.00 36 inch multi color LED light bar: 10.00 2 containers of carbon 10.00 for both - ¼ lb of phosphate media: 3.00 - 2 containers of Kalkwash: 10.00 for both - Lg Mag float with razor attachment: 15.00 - 50 Gal bag of reef crystal salt: 7.00

pmed

and here is how it looked a few weeks back before I started moving the live rock to the new tank. The pink colors are actually red slime algae and not coralline algae

here is a photo of the tank when it was at its prime

My 175G tank has been in a slow decline for the past year or two. I'm getting algae blooms left and right and alot of my corals are not doing so well. I've decided to setup a 72G as my reef tank and convert the 175G to fish only so its easier to maintain. I want to completely drain the 175G and clean up the sand bed. If anyone has a 100G+ drum or rubber maid container they can loan me for this project it would be much appreciated. As a thank you they can have some frags or live rock once I get everything out of the tank. PM me if you have something for me. Thanks, Nadeem

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I found one @ RCA for $15. I picked it up today.