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Water Gardens: Activated Carbon questions

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pondlove
Lewes, DE

March 7, 2011
11:29 AM

Post #8412311

I'm shopping for activated carbon to remove tannins from my pond. The best price I found was about $2.50/lb including shipping on ebay. Anyone know who might sell it cheaper?

I don't want to invest in it unless you members recommend it for clarifying the water.

How much do I need to treat a 5,000/gal pond? How often will I need to change it out during the season?

How long will it take to remove the tannins? I plan to do a partial water change while I do the major cleanout this spring and then treat with the carbon. I can't do a total water change because I don't have a holding tank large enough for all my Shubunkins.
MerryMary
Ocoee (W. Orlando), FL
(Zone 9b)

March 8, 2011
8:34 AM

Post #8414304

I've never used it before. Do you have a bio filter and UV light on your pond? Usually, once the water gets healthy ( I add extra pond bacteria and enzymes) it can balance and stay that way. I do occassional partial water changes after I clean the filter media ( I just let some of the water run out and purge the sponges with pond water) and scoop the leaves off the bottom, and refill what I lost. I have a heavy leaf drop, but so far no tannin problem if I stay on top of it. A skimmer works really well too, so the leaves don't make it to the bottom to decompose.
pondlove
Lewes, DE

March 9, 2011
9:43 AM

Post #8416446

Thanks for the info, Mary. I do have all the equipment such as adequate pump, bio filter, uv, but the heavy leaf drop has caused discoloration. Otherwise, the pond is healthy. I also have the bacteria and enzymes to add to the pond during spring cleaning.

A better net next fall will help, but for right now, I'm trying to fix the tannins.
Oberon46
(Mary) Anchorage, AK
(Zone 4b)

March 9, 2011
12:30 PM

Post #8416705

I will ask my pond guru, Carol at MicrobeLift. She has come up with answers for most all my questions. How did you intend to apply the charcoal. In a bag I suppose. but placed where?
Carolyn22
Athens, PA
(Zone 5b)

March 9, 2011
2:17 PM

Post #8416901

I would think partial water changes would do the trick. Have you done any water exchanges with your start up?
Oberon46
(Mary) Anchorage, AK
(Zone 4b)

March 9, 2011
2:34 PM

Post #8416926

Yes, he should use the activated charcoal and he should put it at the top of the waterfall spillway where the water can flow through it. Or he can use it in the skimmer, depending upon what type pond he's got. Charcoal has a finite capacity to take up impurities, so it may have to be replaced before the water is once again crystal.
Oberon46
(Mary) Anchorage, AK
(Zone 4b)

March 9, 2011
2:38 PM

Post #8416935

That was from Carolyn At MicrobeLift. Of course, the original question was where to buy it cheaply. I wonder if hydroponic stores would carry it.
pondlove
Lewes, DE

March 10, 2011
1:07 PM

Post #8418642

Thanks for your help, Mstella and Carolyn and MerryMary. I will go ahead and purchase some. I'll let you know if it works. By the way, I'm a she, not a he!
Carolyn22
Athens, PA
(Zone 5b)

March 10, 2011
1:45 PM

Post #8418718

Pondlove

let us know how you make out.

This message was edited Mar 10, 2011 5:47 PM

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Oberon46
(Mary) Anchorage, AK
(Zone 4b)

March 10, 2011
2:06 PM

Post #8418753

I will tell Carolyn (pond lady) not to be so sexist! lol Well, she had a 50/50 chance of being right. Good luck.
pondlove
Lewes, DE

March 10, 2011
2:30 PM

Post #8418796

:)

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