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Home: KOI Talk: Pond Water Quality:
Lots of Algea and Green Water

 






 


SheilaGreen
New User

Jun 27, 2008, 12:28 AM

Post #1 of 5 (1253 views)
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Lots of Algea and Green Water Can't Post

Hey everyone. I have been reading all of the posts obtaining to green water and I need even more help. I have a pond about 2000 gal. We have 4 large fish (10 to 12" long) and 4 small fish (4 to 5" long). We have several trap door algea snails, we have 5 plants in the pond, a UV filter all of the way open, a waterfall with proper filtration including lava rock. We just paid a pond company several hundred dollars to help clean it and they did a partial water change. Since then (which was about 2 months ago) we add bacteria every night to help get the bacteria level's right. I tested my water and the PH is WAY high and the salt level is slightly low but the others are perfect. I have green alea growing like crazy from the sides and off the plants about 10 to 12" in length. I know the PH needs to be lowered and some salt added but what can I do other than pull out the algea to get the algea to stop growing? I know if I use an algecide that messes with the bacteria balance. Unsure We even added more rock in the bottom of the pond to help clear up the water (which it did for about a month) and then here we go with the algea. We did not even have this musch problem with algea in the winter or spring. The pond is in full sun and we cannot change that. The mower guy has all of the clippings bagged immediatly and there is nothing else getting in the pond. Can anyone suggest anything? I am lost and about to give up. I have been trying to get this pond "right" for over 8 months now. We just moved in and the house had the pond and it was black when we moved in.


kennethc
Koi Lover

Jul 2, 2008, 2:27 PM

Post #2 of 5 (1152 views)
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Re: [SheilaGreen] Lots of Algea and Green Water [In reply to] Can't Post

How big is your filtration? perhaps its not adequate. What bio-media are you using?
How many watts is your UV? Maybe your UV bulb already needs replacing.
Do you have an air pump and air stones in the filtration or pond?
When you say the PH is high, how high exactly? 9-10?
How much do you feed your koi? Overfeeding also causes algae blooms since they feed off the koi food.
Salt is not important unless your koi is sick. You don't really need to maintain any salinity levels in your pond.
Do you do partial 10% water change every week? Be sure to flush out all the debris and koi crap in your settlement chambers. Decomposing debris that eventually converts to Nitrate also feeds the algae bloom

Aside from UV, the only way to control algae is if you have lots of aerated biomedia so that the good bacteria can starve out/kill the algae spores naturally.

Although your UV should already be giving your clear water, unless the wattage is inadequate.


(This post was edited by kennethc on Jul 2, 2008, 2:42 PM)


SheilaGreen
New User

Jul 3, 2008, 12:09 AM

Post #3 of 5 (1125 views)
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Re: [kennethc] Lots of Algea and Green Water [In reply to] Can't Post

I wish I could answer these for you but I can't. I do know we hired a pond company to come out and chage all of that and make it the way it needed to be along with changing the UV light, so I can only assume that what they did was sufficient since I am on the phone with him every other day complaining. He is telling me that my UV and the filtration is good for the pond. I am getting frustrated all of the way around. We usually do not do a water cahnge as the pond people told me not too but he has been having us do a change every couple of days right now and it is not helping. Please help!


kennethc
Koi Lover

Jul 3, 2008, 1:25 PM

Post #4 of 5 (1095 views)
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Re: [SheilaGreen] Lots of Algea and Green Water [In reply to] Can't Post

Hi Sheila. Normally a pond like yours would go through "new pond syndrome", that is going through green water before achieving a natural balance and clearing up. Usually takes about 2-3 months. My own 3900 gallon pond has almost finished this cycle and the water is magically clearing up. After 8 months you say, your pond should have finished the cycle. Given all the facts you've mentioned thus far, it seems there's something wrong with your filtration system. How long has it been since your pond company renovated your pond?

For now, forget what your pond guy tells you since its obviously not working. Every pond owner knows that water changes every week are practically a requirement. Not more than 5-10% of water is ok, tap water flow at a slow trickle is recommended . Its likely thats why your pond is green, because there's so much decomposing debris build up. You need to flush out the garbage. Also you say you have rocks at the bottom of your pond? Get rid of them, they serve no purpose as debris will just get trapped and accumulate under them.

But in order for us to be of more help, you need to provide more info so we can determine what exactly the problem is.

Where in the world are you located?

What kind of pond do you have? Is it made from concrete? Is it lined with rubber material?

Do you have a bottom drain that leads to the filters?

What kind of filtation do you have? Is it like chambers with green japanese matts inside? or modern bead filter units like Nexus. Pics would be very helpful.
How big is the filtration, what is the length, width, depth of the water inside the filters?

What kind of UV do you have, is it like a light that shines on the water, or is it enclosed in a big tube where water flows through it?

Do you have an air pump producing lots of air bubbles inside the filtration or the pond itself?


(This post was edited by kennethc on Jul 3, 2008, 1:54 PM)


SheilaGreen
New User

Jul 11, 2008, 1:12 AM

Post #5 of 5 (883 views)
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Re: [kennethc] Lots of Algea and Green Water [In reply to] Can't Post

I am located in The Colony, TX. Yes wonderful hot Texas weather.

The pond is an underground and above ground (partial) and is concrete with a rubber liner. The water fall is above ground and is made of rock.

We have 2 bottom drains that lead to the skimmer and pump.

Our filtration is inside the waterfall and is about 3 feet in depth. We have green pads (not sure what kind they are- the pond ompany put them in) we have plants that are part of the filtration area and we have the laval rock. We have about 8 to 10 inches of pad (also what the pond company did).

The UV is a Tetra Pond D22 with a 3500W bulb. It is fully housed in a case and the water flows thru it before it hits the filtration system. Not sure if that helps. I also know the pump turns the water over 10 times an hour.

Other than the waterfall and, we do not have any other air pump around the pond.

I have tried to attache pictures of the pond and it will not accept them, I even tried to zip them and it is telling me they are too big. If you have an email I can email them. Sorry

 
 
 



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