Jun 12, 2001, 12:56 AM
Post #45 of 59
Hi , I need more suggestion from you guys.
My pond with 8 pcs of 40 cm Koi experiencing green color and high nitrite content after 4 weeks old.
My water reading yesterday was
pH = 8.0
Nitrite = 1.0 mg/l NO2
Nitrate = 500 mg/l NO3
Amonia = 0.2 mg/l NH3
KH & GH have not been tested yet(waiting for the test kit to be available)
subsequently I did 50% water change
and this morning the NO2 reduced to 0.5 mg/l
Again I did 50% water change and taken out all water plants(Keladi plant),I will test again the reading by tomorrow morning.
However the water still in green color.Fish almost invincible.
I have installed trickle tower filter(1500 pcs bio ball) on top of the Japanese green mat chamber,yesterday and the output goes back to the chamber and transfered to the pond via waterfall.
The pond is "L" shape , size approx. 3.6 m x 3.6 m x 0.8 m depth, filter chamber is adjacent to the L pond size 1m x 1.8m x .8m.
The drain system using uniring,forced removal dirt concept, with timer every 6 o'clock will drain the pond for 1 minute.
( photos will be email to webmaster if allowed)
I used 1000 GPH submersible pump located in the filter chamber and the outpout is splitted into two outlet one to the waterfall and the other to feed the TT.
1. Do I need to wait another 4 weeks for the TT to mature.
2. Is the above filter configuration is still considerd undersized?
3. Is the input flow rate(approx. 500 GPH) for TT is sufficient?
4. I am thinking of installing another TT which feed directly from the pond, without going thru green mat, is this will help to quicken the eliminate green water?
Your expertise advice on this matter will be highly appreciated.