Can someone please educate me on the UV light? - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 03-09-2006, 05:59 PM Thread Starter
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Can someone please educate me on the UV light?

Well, I have green water so I am trying the willow branch trick to see if it will go away. For any of you that are not familiar with the process I'll briefly explain. Many people have been having success with green water by sticking willow tree branches into the tank where in a week they start growing roots. The branches take out nutrients from the water column faster than the plants themselves so that kills the green algae suspended in the water.

Anyway, since I just started this method I cannot say if it works or not so plan B is in the works -- uv filter/light.

I was surfing ebay looking for the various UV filters and am wondering how they work. Do I need to attach them to another filter or can the setup work on its own? The reason I ask is that I don't have an EHEIM filter but rather use the regular hang on Power Filters.

Here is the pic of something that I want to get but am unsure if I need other equipment. Please give me few suggestions.

Thanks

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post #2 of 10 (permalink) Old 03-09-2006, 06:17 PM
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You will need something to push the water through the UV. Make sure the flows match between the UV & the pump. Too much flow from the pump, and the UV won't have the time to kill the nasties.
From the pic it looks like it's the UV & a power head (make sure it states it in the description) so you wont need anything else.

A lot of the cost is the replacement bulbs, see what those are going to cost you when you factor in the $$

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post #3 of 10 (permalink) Old 03-09-2006, 06:39 PM
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Here's my UV set up, it's attached to a canister but it's the same results using a powerhead, the slower the flow the better the results.
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post #4 of 10 (permalink) Old 03-09-2006, 08:40 PM
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Its huge, but Current USA makes a HOB style T5 bulb UV clarifier with a powerhead which pumps water from the tank through the UV chamber and back into the tank. One option you might consider is "borrowing" or renting a UV unit from a pal in the area, much like you would for a diatom filter. A diatom filter is another option, though sometimes GW comes back for me after a diatom. But I imagine the Turbotwist could be rigged with a powerhead pump that would do the same thing. And its probably nice to have a UV clarifier around for a new tank or rare GW outbreak. You could also beat it with a radical 4-5 day total blackout... with a 75% water change, charcoal, nitrazorb sponge in the can filter cure. I did that before ever becoming a UV clarifier convert. It works, but is hard as heck on the fish and bacteria colonies.

I have my clarifier plumbed in line and never ever use it, but its there just in case. I think the consensus is the turbotwist is the best bang for the buck. I wish I had bought that instead of my Current USA. The Current is more powerful. But so what, it doesn't take a lot of zap to kill GW. and the turbotwist works, is cheaper and smaller, and fits better under the stand if a permanent install. Goodluck.





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post #5 of 10 (permalink) Old 03-09-2006, 10:51 PM
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Sometimes the green water is actually bacteriological, not an algae, so removing nutrients or light does not/will not necessarily cure the problem. UV will do it however. I just had the same issue, and within 1 day of the UV filter being on, the problem was solved.

Let everybody know what worked for you in the end!
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post #6 of 10 (permalink) Old 03-09-2006, 11:00 PM Thread Starter
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Thanks guys.....I hope the GW clears with the willow but if not then I will get the UV stuff.

Can someone look at the auction and let me know if this is an alright unit? If I ask the seller then he's bound to tell me only good stories about HIS product. Now, if the unit will be necessary I will only use it until the GW is gone and then it will be put back in the closet. Oh yeh, it would help if I told you what size tank it will be used on--30 gallon.

Thank you soooo much.

http://cgi.ebay.com/New-Jebo-9-Watts...QQcmdZViewItem
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post #7 of 10 (permalink) Old 03-09-2006, 11:39 PM
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Achtung!

UV light oxidize iron and other metallic nutrient making them unavailable for plants and can contribute of buildup, to use with caution in a planted Tank...

Maybe using it on a shedule or temporary basis?
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post #8 of 10 (permalink) Old 03-09-2006, 11:42 PM
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I "think?" I heard some problems with Jebos leaking on the long haul, but I could be wrong. But nine watts is more than enough for your tank. Since you only want to use it for a quick cure, I imagine it would be fine. Just use a GFI to be safe for the electricity. Be sure to compare the best prices for a Coralife turbotwist at Big Als etc. Because someday you might want to put one inline in a bigger tank??





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post #9 of 10 (permalink) Old 03-09-2006, 11:55 PM Thread Starter
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Quote:
Originally Posted by Betowess
I "think?" I heard some problems with Jebos leaking on the long haul, but I could be wrong. But nine watts is more than enough for your tank. Since you only want to use it for a quick cure, I imagine it would be fine. Just use a GFI to be safe for the electricity. Be sure to compare the best prices for a Coralife turbotwist at Big Als etc. Because someday you might want to put one inline in a bigger tank??
Thanks for the answer but I have one last question.....does the auction look like it includes everything that I would need? Thanks
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post #10 of 10 (permalink) Old 03-10-2006, 12:25 AM
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I think it has everything you need, with the exception of hose and maybe some hose clamps. The powerhead will pump the water and you'll have to get some hose to plumb out of the tank to the UV and back to the tank. Piece of cake. Handy to have a powerhead to empty the tank. I use one for WC both empty and refilling from my prep tank.

Big Als has the Turbotwist for $89, but you'd have to get a $15 powerhead. Use to have free shipping at Big Als, but I'm not sure anymore.





Three Tanks...Eheim 2128 & XP3-90G, Eheim 2128-65G, Eheim 2232-25G.... Tek 4x54 watt T5-90G, Aqualight 96watt PC 65G low tech, 65 watt Aqualight-25G.... Hydors-90G & 65G ... Flourite in 90, 65, & 25 Gallons, .... Auto Water Change/Auto dosing on 90 & 65 gallon..... AGA member......
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