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Last Login: 4/23/2008 8:49:36 PM
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| I have a small(75 approx) outdoor pond with 4 small goldfish that I can barely see 'cause of algae. Do I really need a filter in front of the U.V. unit for this small a setup? Also, is there a problem with a pump being too powerful for the size of the U.V. light? Thanks in advance for a response
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| Hi Mike, Welcome to the Marine Depot Forums . I apologize for the delay in replying. UV filters will work better with a prefilter before the water goes through the unit, but they can run without this prefilter. You will just need to make sure you are cleaning the quartz sleeve more often. The flow of the water through the unit needs to be within the manufacturers specs. Going to fast through the unit will not allow enough contact time with the algae cells and the UV light and therefore not kill the algae. HTH,
________________________________________________ Keith "Simply put, you believe that things or people make you unhappy, but this is not accurate. You make yourself unhappy." Wayne Dyer
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Keith, I have bought UV light from Marine Depot, or did I buy from local store can't remember, anyway, Bought a 3X 9W Turbo twister. Well something that happen was the amount of flow that was going through the unit. Now if the thread post oe. is talking just fish only tank, maybe no problem. But I even put valve before unit to control flow with a little 300gph pump. Did all the head pressure loss cal. And approx: valve cut down flow. Well something that caught my eye was when installing the light itself when bought new, was the inside of the chamber housing the three fins that is machined in a swirl spin vortex look three times, hints the name 3X. Well isn't that product designed to slow down the flow three times before it leaves the unit, exposing it to the light longer? Why I ask this is because when I hooked up, the flow to unit was about 195gph and dang near killed all my corals. Are there other UV units on the market designed different, like just straight through housings?See ya
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what would the mechanism be that almost killed your corals? the UV will only kill things as they pass by it in the water column, and not all of those even.
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Carl-the skimmerless heretic
Sun powered reef
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To long exposure to the light, or to less exposure to the UV light itself, hmmmm
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Group: Forum Members
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??? what. the UV only kills stuff as it passes by the lamp in the pipework.
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Carl-the skimmerless heretic
Sun powered reef
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Group: Administrators
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| The sterilizer should be a close unit that does not shine into the tank, so I think it may have just been a coincidence that the coral had issues after hooking up the sterilizer. Or maybe there was something on the pump or sterilizer that caused issues with the corals? I have never heard of a UV causing issues with corals themselves. But to answer your question, yes there are ones that don't "twist" the water around the UV light. I personally like the AquaUV sterilzers. You pay a little more for them, but the quality is much higher and customer service from the manufacturer is top notch. HTH,
________________________________________________ Keith "Simply put, you believe that things or people make you unhappy, but this is not accurate. You make yourself unhappy." Wayne Dyer
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