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Old 12-28-2004, 06:25 AM   #11
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The most obvious question to everyone here is what effect these have on corals, anenomes and most importantly, the bacterial levels in one's aquarium.

The bacteria level degredation is my most concerning matter, otherwise I would install one myself.

Folks I have spoken to recommend running it only for a few hours a day, and certainly not 24 hours a day. I supose regularly adding bacteria suppliments would be worthwhile.

I'm interested in everyone's thoughts on this as I am debating it over and over myself.
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Old 12-28-2004, 03:52 PM   #12
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Folks I have spoken to recommend running it only for a few hours a day, and certainly not 24 hours a day.
I heard kind of the same thing. If you have to run it 24x7, then something is seriously wrong with your water chemistry. I run mine on each tank every couple of weeks or so for a few hours, mostly for water-polishing. The next day, my tanks are usually unbelievably clear (they're clear anyway, but this really makes them amazingly so).

I read the article that was referenced earlier in the thread, and I'm sure there was some good information in it, but I didn't understand it. I know there is some link between the GPH flow rate and the "zap" that the article recommends, but it sounds like some of the calculations are based on much stronger UV units than the Turbo Twist 9. Then, the amount of head pressure the pump/powerhead can generate affects performance also. My Rio 800 pump is rated at 211 gph, with 0" head...add 1' of head pressure and that cuts it to about 150 gph, 2' of head pressure and that cuts it again, etc. The trick is to find a pump that will give you the correct flow rate at the max head that you'll need to reach the sterilizer.

That's the part that I haven't quite figured out yet. But I'm seeing *some* positive results, so I must be close.

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FW1-16g, 5 Zebra danios, 4 Pristella Tetras, 4 Black Skirt Tetras, 2 Gold Barbs, 1 Brush-nose Pleco
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SW1-75g, (80# LR), Scarlett hermits, Turbo snails, Percula Clownfish (Gizmo), Oscellaris Clownfish (Whizzer), Indian Yellowtail Angelfish (Mikado), Royal Gramma (Orpheus), Black Sailfin Blenny (Casper), Yellow Tang (Pele), Racoon Butterflyfish (Raptor), Lyretail Anthia (Juliette)
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FW5-20g, 2 Gold Angels (non-paired)
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Old 12-28-2004, 06:57 PM   #13
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I have a cyno-bacteria and general green hair algae problem. I only have my lights on for 8 hours a day, and feed every first or second day. Admittingly though, some of the food drifts off into the tank which the fish don't get to so that might have something to do with the algae problem.

My main concern is removing the cyno-bacteria. I am about to order some chemi-clean to see what that does though.

Are there any general places you should install the unit? For instance, before or after the filtration? I feel that it should be before filtration as the good bacteria should be coming out of the filter?
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Old 12-28-2004, 08:51 PM   #14
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I ordered my uv and power head last night. One more question: how far down in the water do I put the powerhead and do I put my return line at the oppisite side of the powerhead?
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Old 12-29-2004, 12:29 AM   #15
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i love my u.v. sterilizer, power compact 9 watt double helix. i have been running this on my 30gal for a year straight, and have had it on my new 75gal oceanic for 2 yrs now. i have not had one diesese since i bought it in 2001. i would put the power head up close to the surface only because you do not want any sand getting into the u.v. the return hose can go any where for more water movment. i put mine next to my intake for my skimmer, this way i'm making a cheaper virsion of a ozonizers.
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Old 12-30-2004, 11:35 AM   #16
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[quote="flanque"]

The bacteria level degredation is my most concerning matter, otherwise I would install one myself.

Folks I have spoken to recommend running it only for a few hours a day, and certainly not 24 hours a day. I supose regularly adding bacteria suppliments would be worthwhile.
quote]

Bacteria grows on LR,LS tank walls. IMO There is very little if any free floating bacteria that would get killed in a UV light.
I ran my 25 watt UV on my 125 24/7 for over a year till it crapped out and my tank was doing great, fish and corals all healthy. I will be getting a new UV in the future, for piece of mind and to help kill free floating algae.

A UV will not kill hair algae or cyno bacteria.. This is caused by excess nutrients.

Lower water flow through a UV is good, too fast and it will do nothing. The time water is spent in the light is dwell time. This is that amount of time needed to kill organisms. So it is important to follow the manufactures advice for flow rate.
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Old 01-01-2005, 12:14 AM   #17
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I installed the uv today. I put the powerhead at one corner of the tank and ran the tubing to the other side. I didn't realize my hose was so far down in the tank because when I pluged in the ph, the force of water coming out the other end blew the sand all over the bottom of the tank!!!
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