How to Purchase a UV sterilizer questions
I am interested in a UV sterilizer. I will be buying an aqua ultraviolet brand, unless anyone thinks that there is a better alternative. I was wondering if somebody could help me size the sterilizer for my tank parameters.
I will run it inline with my 120 (+5 gallons in the filter plumbing, maximum) fresh water tank. Using a pondmaster 9.5 (950 GPH max). No live plants. Usually does not have problems with green algae; so, the purpose of this sterilizer is merely for killing organisms. I am most worried about ich as my fish seem to have problems with that (on and off).
So, I have been trying to figure out what EOL is (see link below to PDF of tables for FRESH water sizing chart) and whether or not I need a 8 watt or 25 watt unit with my 950 GPH. I am in the process of replacing the pump, so I could always buy a new one with a lower flow rate if that is necessary to achieve better killing via UV (I know that flow rates that are too high decrease efficiency of killing).
I was hoping to get away with the 8 Watt advantage series unit. But i would be OK upgrading to a 25 watt advantage or classic series to get the 30,000 EOL 1200 gph rating. Am I correct in assuming that I will nneed a 25 watt unit because of the speed of my pump is to large (great than) for the 642 that the 8 watt is rated for? Or, is 30,000 EOL high enough for killing most things including ich. I read on one forum that you should aim for an EOL of 75,000. This seems excessive to me, no?
Originally Posted by winset
So based on this, with a 950gph pump, you need at least a 40 watt UV. Caveat is that the free swimmers must end up in the UV sterilizer. Some may bypass that and still make it to the fish.
The recommended UV dose for Ichthyophthirius theronts is 100,000 µWsec/cm2 (Hoffman 1974).
If you goal is to use a UV to help prevent dieses like ick, then I would suggest using the money you were going to spend on the UV and get a quarantine set-up. More bang for your buck that way.
If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
"Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
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