MMinehan Posted May 14, 2008 Report Share Posted May 14, 2008 My first post. Does it matter in which order the UV filter and canister filter are? I was thinking that if the UV filter was first it may kill the de-nitrifying bacteria before they were able to colonise the filter medium. Or will the media get colonised anyway? Marty. Quote Link to comment Share on other sites More sharing options...
Afrikan Posted May 14, 2008 Report Share Posted May 14, 2008 You put the UV on the output of your canister. Quote Link to comment Share on other sites More sharing options...
tHEcONCH Posted May 14, 2008 Report Share Posted May 14, 2008 I can't see tha it would matter as far as sterilisation goes - it is part of a closed loop - but it may get blocked if it is before your cannisters mechanical filtration. Quote Link to comment Share on other sites More sharing options...
Afrikan Posted May 14, 2008 Report Share Posted May 14, 2008 Yeah it does matter, definately should be inline to the canister output. Quote Link to comment Share on other sites More sharing options...
tHEcONCH Posted May 14, 2008 Report Share Posted May 14, 2008 Why? Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted May 14, 2008 Report Share Posted May 14, 2008 Because the more suspended solids in the water being treated the less UV penetration. Quote Link to comment Share on other sites More sharing options...
tHEcONCH Posted May 14, 2008 Report Share Posted May 14, 2008 Ahh... Quote Link to comment Share on other sites More sharing options...
Afrikan Posted May 14, 2008 Report Share Posted May 14, 2008 Yep and reasonable sized particles in the water can damage the UV bulb also and shorten the life span.... (apparently according to literature I was reading)... there is conflicting thoughts tho on different info on net.. Quote Link to comment Share on other sites More sharing options...
MMinehan Posted May 14, 2008 Author Report Share Posted May 14, 2008 Because the more suspended solids in the water being treated the less UV penetration. That makes a lot of sense and seems to a good reason to put the UV on the output side of the filter. Thank you all for your advice. Quote Link to comment Share on other sites More sharing options...
David R Posted May 14, 2008 Report Share Posted May 14, 2008 Mine is on the output of the filter, and I recently noticed algae growing in the clear pipe right after the outlet of the UV steriliser!! Does this mean its not working properly? Quote Link to comment Share on other sites More sharing options...
MMinehan Posted May 15, 2008 Author Report Share Posted May 15, 2008 Mine is on the output of the filter, and I recently noticed algae growing in the clear pipe right after the outlet of the UV steriliser!! Does this mean its not working properly? I don't think that any UV system will 100% kill all algae or nasties. I think that they mainly serve to reduce the total amount in a system rather than clear it totally. So I would guess that it is working fine. Just check how long you have had the lamp/lamp life and make sure the flow rates are not above the UV filters recommended. Marty. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted May 15, 2008 Report Share Posted May 15, 2008 There are a lot of critical factors with UV sterilizers. They are realy sanitizers and the temperature, flow rate, water clarity, depth of water being treated as well as the age of the bulb all add or detract from the effectiveness of the system. Quote Link to comment Share on other sites More sharing options...
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