Burnt out another MH, why?

mark · #1 01-30-2008, 04:12 AM

Damn, lost another one and this one after only running a month at 9hr/day. Beginning to think Hamilton's are crap.

Though the pendants are mounted in a hood, don't think temperature's a problem. I have a 5" muffin fan in the basement hooked up to some 3" duct blowing air through the hood. Been quite awhile since I took temp reading and don't remember exactly but I'm moving a lot of air and the exhaust temperature air wasn't that much above ambient.

Delphinus · #2 01-30-2008, 04:31 AM

Not that this helps you but the only lamp I've ever had that was a bona-fide "burnt out halide" was a 250W DE. And come to think of it, it was the Hamilton lamp that came in the Hamilton Reefstar pendent. The Ushio I replaced it with is still going strong (now a bit overdue for replacement actually, a tad over a year I think). I'll be replacing it with an Iwasaki 14k though, love the Iwasaki's, so want to see if the DE's are as good quality as their SE's.

fishmaster · #3 01-30-2008, 05:22 AM

I've had 2 premature burnt out hamilton's. One in about 8 months, the other in 2 months! Both DE 14k 250w. Both in a hamilton pendant fixture with a hamilton ballast. Too bad because they are nice bulbs for the money.

mark · #4 01-30-2008, 02:01 PM

Quote:

Originally Posted by Delphinus

Not that this helps you but the only lamp I've ever had that was a bona-fide "burnt out halide" was a 250W DE. And come to think of it, it was the Hamilton lamp that came in the Hamilton Reefstar pendent. The Ushio I replaced it with is still going strong (now a bit overdue for replacement actually, a tad over a year I think). I'll be replacing it with an Iwasaki 14k though, love the Iwasaki's, so want to see if the DE's are as good quality as their SE's.

See at J&L the Iwasaki are backordered so wondering about the Ushio. How the colour, like the Hamiltons and not looking for anything to blue?

Delphinus · #5 01-30-2008, 05:53 PM

No, more of a whitish colour. I think it was bluer when it was new though (not overwhemingly so though - you'd still want actinics if you wanted a blue sheen, I would think).

I find with stuff backordered at J&L though it's very rarely too long to wait - at least the last 2 or 3 things I've inquired about, ended up being in stock a couple days later. Maybe fire off an email to them and ask..

Edit: failing that, I noticed premiumaquatics.com has them: http://www.premiumaquatics.com/Merch...y_Code=mh-250w

fishmaster · #6 01-30-2008, 07:13 PM

Quote:

Originally Posted by mark

See at J&L the Iwasaki are backordered so wondering about the Ushio. How the colour, like the Hamiltons and not looking for anything to blue?

I ran into the same issue. I ended up going with the aquaconnect 14k. The colour is very simmilar the the hamilton. Maybe slightly bluer, but not much. Overall, a nice bulb.