koi@kit
Senior Member
May 21, 2008, 8:33 AM
Post #8 of 19
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Re: [chriswu3311] How many times do u guys doing water change?
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Green water bothering me while i started tis hobby from Jan07-sept07.
Until Mac08 the green water came back again cause by over feeding i think???
After install the a uv light the problem solved.... using UV only solve ur problem temporary. i wud suggest u improve ur filter system or set up. let the bacteria do the job for u.
The green water started to came back again 1 weeks ago, i think this time may cause by tap water.
Usually i do water change 15% once a week and top up the pond water by 50% tank water and 50% tap water.
But last week i drain about 20% pond water, top up with 100% tap water with out anti-chlorine.
After top up the pond the pond water started to turn cloudy, the 2nd day turn yellowish..
Then i knew something just happen, the green algae shld bloom after few days.
So i quickly install the uv light to the pond, then the water is under control now.
Do u think tat could cause by the tap water??? Normally when i adding tap water the pond water will turn cloudy,
but after running the water pump few hours the water will turn back clear as normal. But if the water wouldnt turn clear over nite (for my green water experience) sure green water must bloom after few days.
Will tat cause of the bacteria kill by the chlorinate tap water??? I m still trying to find out why????
yes. chlorine can kill bacteria in filter.
dis is my suggestions :-
1. use filter media dat give u more surface area, thus more bacteria can grow on them, no point having a big filter with
limited filter media.
2. clean the waste accumulate in the bottom of ur filter chamber daily, the waste is fertilizer for algae.
3. reduce ur nitrate by:-
a. make waterdrip of ard 10% daily, let the water overflow
b. use zeolite to trap ammonia, No ammonia means no nitrite, no nitrites means no nitrate.
c. use vege filter, lots of them.
good luck
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