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uv question

 





 


TADE4444
New User

Oct 24, 2006, 1:44 PM

Post #1 of 7 (2507 views)
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uv question Can't Post
Can someone recommend a good uv that is not too expensive. I need 2 for my pond. Its 8000gl so my friend said I needed 2. I'm not sure if I do need 2 so we will see. Has anyone use a Gamma uv cause its resonablely priced but I don't know the quality. I anyone has any suggestions please help. Thank you


koiguyoz
Member


Oct 24, 2006, 5:05 PM

Post #2 of 7 (2502 views)
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Re: [TADE4444] uv question [In reply to] Can't Post
I have taken a look through your previous postings (of which there are only four).

The purpose of the UV light is to damage the outer cell of the phytoplanktonic algae (a microscopic floating plant) of which there are billions in number in your pond. By bombarding this living organism with light in the ultraviolet frequency range, the phytoplanktonic algae die.

However, several users have reported of a spike in nitrite and ammonia levels because when things die in the pond, the result is increased nitrite and ammonia levels.

Often the living organisms found in larger numbers within the biological filter (normally nitrospira and nitrosomonas bacteria) are responsible for the conversion of the ammonia and nitrite.

Of course now we come back to a neverending cycle where because the biological filter's surface area (found on items such as your lava rock, bioballs etc) is insufficient in number to convert enough of the ammonia and nitrite you end up with green water (an indicator of excess nutrients unable to be consumed by the bacteria living within your biological filter.

The answer is therefore to proceed with increasing the efficiency of the biological filter. If you currently run a biological filter where all the media is submerged, you should consider the installation of a trickle tower (TT) (many plans can be found on the forum at www.koiphen.com . The TT cultivates aerobic bacteria which are highly efficient in my experience at converting nitrite and ammonia as well as reducing nitrate levels significantly. I used a combination of lava rocks at the bottom with at least 3/4s of the container filled with bioballs and bird netting and reticulated foam as a prefilter/drip plate and a piece of dacron as a mechanical filter.

My pond is 1500 gallons (5000 litres) and houses ten or so 18inch koi and around 20 or so 10inch koi. My water is gin clear, the ammonia is at 0 mg/l, nitrite is below 0.05 mg/l and nitrate is below 10mg/l. PH is 6.4.

A 300 to 500 litre tank will greatly assist in giving you gin clear pond I believe :).


oorah
Koi Lover

Mar 28, 2007, 3:30 AM

Post #3 of 7 (2256 views)
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Re: [koiguyoz] uv question [In reply to] Can't Post
was reading your post on the UV light....good info.....I have a 1300 gal pond and the water is not up to par as far as clarity....was wondering if you could post some pics of your system including your pond and filter makeup.....appreciate it....

oorah


tangigi3
Koi Lover


Mar 28, 2007, 3:40 PM

Post #4 of 7 (2241 views)
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Re: [oorah] uv question [In reply to] Can't Post
Hi,

the cheapest way to make a uv is to go to a medical supply company and buy germicidal bulbs (mmmm....1 watt per ton of water, I think). Then go to a hardware, buy the ballast that has the correct wattage for your bulb and frame for the bulb.

place the frame in your settlement chamber and cover it well bec uv rays are bad for your eyes.

Lar


ayranjim
Koi Lover

Apr 1, 2007, 8:59 PM

Post #5 of 7 (2151 views)
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Re: [TADE4444] uv question [In reply to] Can't Post
Hello, for all the people that want clear water and are thinking the only way is through buying uv, I would say WAIT!!! try something cheaper, more biomedia in your biofiltration!!! Koiguy has used this, I use this and many others, start with the easiest thing, and then see if that works, remember, even if you ad more biomedia, you will still have to wait a couple of weeks before you see a difference!
JIM


koiguyoz
Member


Apr 2, 2007, 5:28 PM

Post #6 of 7 (2129 views)
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Re: [ayranjim] uv question [In reply to] Can't Post
Hi I'm koiguy! You can call me Ben!

I have no UV lights in any of my three highly stocked ponds, yet nitrite and ammonia are 0mg/l.

The cost between the addition of high surface area biomedia (such as a change from lava rocks to bioballs, K1 etc) are almost equivalent to the addition of a UV light in most koi filtration systems, but the benefits of increased biomedia far outweigh the benefits from a UV light (which can't lower nitrite and ammonia such as the additional growth of positive bacteria on additional biomedia can).

Ayranjim you sure are heading down the right road Sly


ayranjim
Koi Lover

Apr 2, 2007, 9:33 PM

Post #7 of 7 (2116 views)
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Re: [koiguyoz] uv question [In reply to] Can't Post
Thanks Ben, I am trying to learn as much as I can, And at the same time help others!
Jim

 
 
 



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