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DlStreamnet
 
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Quote:
Originally Posted by Xcric View Post
how old is the bulb and is it rated to handle the amount of water cycling through the filter?

It's a 6w bulb, so I assume its rated for what I bought it for.

Let me rephrase this question:

You have a 500gal outdoor pond, with lillies, direct sunlight and a high fish density (some koi, mostly carp anyway).

What is the ideal filter system for gin-clear water? Purchasing from www.swelluk.com


What is the ideal UV light?
What is the ideal flow rate?
What is the ideal filter system & media with least maintenance but maximum effect? (talking once a month clear out ideally, max every 2 weeks).

Answers on a post card! I want this to be perfect, so money is not really an object as long as it's sub 500.
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Old 02-26-2012, 01:50 PM DlStreamnet is offline  
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g|aSsJaw
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What is the ideal UV light?

For a 500 gallon pond, I think you would need a 15w sterilizer. An 8w bulb is rated for a max size of 300 gallons, so your 6w bulb probably can't handle a 500 gallon pond. I'm not familiar with the brands that swelluk carries, but I'm familiar with this company and they're pretty good:

http://www.pondalgaesolutions.com/uvfilters.html

I don't have much experience with ponds, so I don't want to just flat out tell you to go buy something, but if you follow that link it looks like they welcome questions, so you could probably get in touch with someone who could get you going in the right direction.

What is the ideal flow rate?

I have always heard that the pond should completely turnover every 45 minutes to an hour. I did a little bit of searching and that seems to be the consensus on a koi forum as well.

What is the ideal filter system & media with least maintenance but maximum effect? (talking once a month clear out ideally, max every 2 weeks).

I'm not sure. This would probably be a good question for the company that sells the UV I linked you to.
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Old 02-26-2012, 02:47 PM g|aSsJaw is offline  
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DlStreamnet
 
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Sweet, thanks dude. That site helps a lot, as I think atm I am using a 6w. I wonder if going over kill on the UV will make a difference...as this is something I keep hearing is the 'be all' solution.
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Old 02-26-2012, 03:39 PM DlStreamnet is offline  
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Quote:
Originally Posted by DlStreamnet View Post
Sweet, thanks dude. That site helps a lot, as I think atm I am using a 6w. I wonder if going over kill on the UV will make a difference...as this is something I keep hearing is the 'be all' solution.

I think from a cost perspective it would be best to stick with a UV sterilizer that is rated for your pond, because a larger UV would also require a larger pump to feed it, so the price goes up on both items. Plus, I would imagine the main filter system you end up getting is going to eat up a majority of your budget, and it's probably better to spend your money on that anyway.

Even with the right UV sterilizer for your size pond, flow rate will make all the difference, so make sure you get that sorted out if you end up speaking with someone from that website.
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Old 02-26-2012, 03:46 PM g|aSsJaw is offline  
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BoObMeIsTeR
 
The bigger the uv the better, you want the water to move through at a slower pace to give a longer exposure time. Always had 36 watt uv's on the pond at work, roughly 1000 gallon, but used the biggest sterilizer to lengthen the exposure time.
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Old 02-26-2012, 06:26 PM BoObMeIsTeR is offline  
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Thermo1223
 
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Quote:
Originally Posted by BoObMeIsTeR View Post
Yes, too high of an o2 content will assist with algal growth, algae unlike other plants, feeds on o2 and gives off co2, the opposite of a normal plant.

No...

Algae feeds off of excessive nutrients & sunlight it pulls CO2 out of the water it creates O2 but not nearly enough to sustain life. The mere fact it is growing means you have a lack of water flow(surface gas exchange), excessive nutrients(overfeeding/decomposing matter), lots of sunlight(can't do much there).

This coupled with the fact that they can clog filters just complicates your problems. Your pond probably has a high Nitrate reading which if left unchecked is deadly. It slowly suffocates the fish for O2.

Water changes are the easiest way to combat nitrate build-up but in outdoor ponds not necessarily as nature usually works it out as long as your keep the bottom fairly clean the filter flowing good. Denitrifying bacteria will take up shop as long as conditions are right, releasing the N2 back into the atmosphere. Look up the nitrogen cycle.
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Old 02-26-2012, 09:40 PM Thermo1223 is offline  
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DlStreamnet
 
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For those interested, I read up a fair bit and ordered:

Blagdon Force Hybrid 10k
http://www.swelluk.com/pond/pond-pum...ps-104571.html

Idea is this will be in sludge mode, cleaning the bottom of the pool (which is pretty stagnant and rank at the minute)

Coupled with this Fish-Mate Powerclenz Pressurised Filter:
http://www.swelluk.com/pond/pond-fil...lters-601.html

Which has the easy clean function (not much faith in it, but it seems okay based on YouTube videos). Has a 13w UV built into also, as well as Supra Bio-Media.

Going to put a small air pump in the stagnant areas of the pond and modify the waterfall so it hits a wider surface area moving the water around a bit more.

Total for both with some shenanigans was 240 delivered.
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Old 02-29-2012, 10:51 AM DlStreamnet is offline  
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Which powerclenz model did you get?
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Old 02-29-2012, 12:58 PM g|aSsJaw is offline  
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DlStreamnet
 
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Quote:
Originally Posted by g|aSsJaw View Post
Which powerclenz model did you get?

The 15k model
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Old 02-29-2012, 01:23 PM DlStreamnet is offline  
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Cool, looks good. Post some pictures when you have it all set-up if you can.
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Old 02-29-2012, 01:31 PM g|aSsJaw is offline  
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Thermo1223
 
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that filter actually looks pretty fing cool...
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Old 02-29-2012, 04:36 PM Thermo1223 is offline  
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DlStreamnet
 
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Kit arrived yesterday, going to install it tomorrow. Anyone interested in build pics?
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Old 03-02-2012, 08:37 AM DlStreamnet is offline  
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Quote:
Originally Posted by DlStreamnet View Post
Kit arrived yesterday, going to install it tomorrow. Anyone interested in build pics?

Yeah, I asked for pics
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Old 03-02-2012, 12:46 PM g|aSsJaw is offline  
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#28  

d114
 
if you use a larger sterlizer than the pond and pump are rated for does that mean water will flow more slowly through the sterilizer, with the ultimate result of having a more complete burn?
Old 03-02-2012, 09:03 PM d114 is offline  
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#29  

Gibonius
 
My dad built a whole mess of ponds and uses an all-natural setup to keep them clean, they almost never have algae problems. Occasionally string algae in the summer, but the water is always clear and not green. Some of his blog entries on the topic:

http://davermfarm.wordpress.com/2011...g-pond-update/
http://davermfarm.wordpress.com/2011...are-a-delight/

Bunch of pictures in there too. They're pretty sweet ponds. One is 1400 sq ft, big enough to swim in.
Old 03-02-2012, 09:34 PM Gibonius is offline  
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