Yes paani change nahi karna hai. Maine bola ki 25 watt ka submersible pump laga kar pani filter karo jis se excess solid matter nikal jayega. Pani tank me hi girega
Sir mera tank kaa amoniya controll nehi hoo raha hai...kiya koru sir?? 8000 lt kaa tank hay , 4000 kaawoi mosli hay,, one month huwa hay obhi..Amoniya 2ppm ..plz tell me how i maintained it