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Removing nitrates from pond
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Posted by JohnTW16 SW London (My Page) on Sun, Nov 20, 05 at 17:03
| Over the past couple of years, I have relied largely in having a number of plants in the (1500 gallon)pond to remove nitrates. For next year, I am considering reducing the quantity. I am a bit worried about the possible build up of nitrates. For those members that have "pure" koi ponds with no vegetation, how would you go about reducing the nitrate level in the pond, preferably non chemically.
Grateful for any responses
regards and Happy Xmas to all members
JohnTW16 |
Follow-Up Postings:
RE: Removing nitrates from pond
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| Hi, good question and something I'm working on as well. I only have a few plants in the bio filters now but it's not really enough. From what I've read and seen for sale, trickle towers or bakki showers are what you need. Unfortunately they need to be completely above pond level so you can't hide them easily. The bakki showers I've seen for sale look great for doing the job but they aren't too chaep. |
RE: Removing nitrates from pond
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Hi John,
As Mark has said Bakki shower filters and trickle towers are suppose to reduce nitrates. The bio side of my system is a showered type but I still get abundant blanket weed, even with the pond well planted. Regular, weekly 10% -20% water changes are another way of reducing the build up of nitrates. But with all this most koi keepers still suffer blanket weed to a certain extent. Some koi keepers are starting to use RO plants to do partial water changes, so running a low TDS pond, soft water supposedly good for the koi's growth and development and the lack of mineral would starve the blanket weed.
Chris. |
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