AA Aquarium Spare Bulb UV9W

Replacement bulb doesn't Last 6000 hours (about 8 1/3 mo.) as stated in the Green Killing Machine 9 watt Internal UV Sterilizer with Power Head Lasts only 3 to 6 mo. As stated on box and on the manufacturer's website at "This is not a disposable unit, UV lamps have a life span of 3 to 6 months in constant use. However, it is only suggested for use with green water and unit shall be switched off if water is clear." It also says: "UV radiation at a wavelength of 254mn making the unit extremely effective in controlling bacteria, yeast, moulds and other pathogens." While it does clear up green water, I thought it helped prevent disease. If the mfr. says that it can be shut off when the water is clear, then it only "..is effective in controlling bacteria, yeast, molds, and other pathogens, in turn (as it relates to) controlling algae growth."

All promotional material says: "Prices for these replacement bulbs are very affordable." This is misleading to me, since the yearly cost of running the UV bulb 24/7, and if it lasts only 3 months, can be about $90. I got my replacement bulb from The Umbrella Group who is a very reputable reseller, but I think they may have originally gotten some incorrect info from the mfr?

I have had the Green Killing Machine for over a year now (in a salt and fresh tank) and I love it! I originally bought it for my 36 gallon fresh tank when it was going through a horrible case of algae bloom. It had that thing clean in 7 days (it was a TON of algae) even after chemicals and 0 light for a week couldn't do it. I have since used it in my 36 gallon salt water tank it works great!

The only thing I don't care for about it is the odd/awkward/ugly design... but if that is what it takes to make it work.. *shrug*

On the replacement bulb specifically it comes as one plug and play unit, no need to take the old case apart and reseal. Worked great!

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I bought two of these for my two Discus tanks from my local shop.The original bulbs lasted about 4 months.My local shop did not have the replacements,so I came to AMAZON.COM.All is good so far right? I started to see that these are hard to find so I purchased four replacement bulbs for $133.00 ( i believe I had the bigger model,forget the size) The first bulb lasted 2 weeks,the second 1 week,the third did not work at all and the fourth lasted 2 weeks.And no,I did not replace them incorrectly.Please note that this is a great product WHEN it works.My best advice is to keep up on your water tests and water changes.And remember,if i'm taking the time to write this,there are MANY more people who are just disgusted and trashed this unit ,and called it quits without saying a word.I hope this company goes out of business.

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I bought the Green Machine and knew right away it was working great. Then it stopped working so I bought this replacement bulb. Well, it's been over two months and I'm stumped as to whether it's working or not. My water is still cloudy (off and on) and the blue filters don't seem to be catching anything. There is no indicator light (at least on mine) that I can see that shows me whether the device is working and frankly, I can't even decide if I like it. I'm kind of bummed because I was looking forward to this doing as great a job as the original part did, but again, I just can't tell. I'd hate to have to shell out for a whole other UV machine, but frankly, I'd rather do that then keep paying money for a unit I don't even know is working!

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I bought this unit at the local pet store. I needed algae control in an outdoor top-less 45 g fancy goldfish tank (in FL). It was the cheapest one I could find. It did clear my water, but seems much less effective now, 9 months later. Flow rate is very low, but I guess a low flow rate helps this weak 9 W unit to be effective.

I have not been able to get the light unit apart to inspect the bulb and chamber, so a replacement bulb might be kind of moot. It looks like a lot of people have not had good luck with replacement bulbs, so I am going to consider this a disposable unit that is dead.

One thing I have noticed with replacing UV bulbs in other units (Coral Life TurboTwist and Custom units), is that you do need to be very careful not to touch the bulb itself with your fingers. Something about the oils from your fingers damaging the bulb coating. All of the replacement bulbs have warnings about this. I did not take this seriously at first, but find that I get MUCH better replacement bulb life if I am super-careful and do not handle the bulb directly.

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