<p>I just tested this sterilizer and it is in working order. &nbsp;I replaced the bulb and it has about 2 weeks of use on it.</p>

<p><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">The Aqua Medic Helix Max 18 Watt UV Sterilizer uses an aggressive spiraling flow design that incorporates more &quot;twists&quot; in a single pass through the housing. This increase in contact time means big gains in efficiency. The 18 Watt Helix Max is appropriate for aquariums from 125 to 300 gallons. A pump is needed for the sterilizer. The flow rate through the sterilizer must be less than 400 gph.</span></p>

<ul><br />
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">18 Watt UV Sterilizer for fresh and saltwater aquariums from 125 to 300 gallons</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">For in line use</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">Pump required, but not included. The flow rate through the sterilizer must be less than 400 gph.</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">Dimensions: 17-1/2&quot; X 8-1/2&quot; X 6&quot;</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">Inlets/outlets are for the following hose sizes: 3/4&quot;, 1&quot;, 1-1/4&quot; &amp; 1-1/2&quot;</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">Includes in cabinet mounting plate</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">Electronic ballast in a sealed remote enclosure</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">Eradicates water born parasites, bacteria, fungi, viruses and other pathogens</span></li>
<li><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px"><a href="http://www.aqua-medic.com/wp-content/uploads/2012/05/UV-Sterilizer-Manual.pdf" style="color: rgb(17, 94, 171); text-decoration: none;" target="New_Window">User Manual</a>&nbsp;(pdf in new window)</span></li>
</ul>

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<p><span style="background-color:rgb(238, 238, 238); color:rgb(0, 0, 0); font-family:verdana; font-size:11px">For more info see:&nbsp;</span><a href="http://www.marineandreef.com/Aqua_Medic_Helix_Max_18_Watt_UV_Sterilizer_p/RAB77810.htm?gclid=CjwKEAiA9qCnBRCb7ZDhvaHSyicSJABGFFHtGPWWgAEwiSPpHDVGx4JJhUNN4G-YplEjZEHG-wplSBoCc-Hw_wcB">http://www.marineandreef.com/Aqua_Medic_Helix_Max_18_Watt_UV_Sterilizer_p/RAB77810.htm?gclid=CjwKEAiA9qCnBRCb7ZDhvaHSyicSJABGFFHtGPWWgAEwiSPpHDVGx4JJhUNN4G-YplEjZEHG-wplSBoCc-Hw_wcB</a></p>