
DANAS
New User
Dec 29, 2007, 4:08 AM
Post #1 of 3
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Pond is cloudy - at wits end
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I have a 75 gal tank inside with 2 Koi about 6" - 8", a large Shubunkin goldfish about 8"-9" and a small koi about 3". I started my tank in September and can't seem to keep it clear. I live in Missouri in the country. I have a external 110 biofilter system that hangs on the top with the foam, carbon (mix) for ammonia, and the bag of rocks on top (like lava rocks). I try to change 25% to 30% of the water every other week and clean out the foam filter at that time, sometimes more often. I use well water that has no chlorine in it and is add water around the same temperature 74 - 76 deg. Due to the size of the tank and the amount of water needed, I can't let my water set for a few days. I change the carbon around 4 to 6 wks and I just changed the rocks 2 wks ago. (I was told to every three months). I don't change more than one item at a time. My tank stays cloudy all the time and gets black algae on the sides and fake plants. I used to have another 9" Koi in there, but took it out about a month ago. My tank currently is white cloudy whereas before it was green. It is very frustrating having this huge tank and never being able to see my fish clearly. What do I need to do or not do?
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