I have 8 Gallon only Betta male fish, 100 watt heater,120 L/H filter and air blubber
Actually 2 days before when i check my tank water was looking somewhat brown. So I test water parameter and I found that 0 ammonia, 0 nitrite and more than 10 nitrate. So I make 80% water change same time. Next day when I see the water was very less brown than check again for nitrate it was near 5. So I again water change for 40%.
So now I wanted to did I do right thing and what is the reason for this.
Next thing lot of time I see like very small spider net type in my water is by my betta fish and it is by betta fish than it bad or good. Another thing my betta fish sometimes sleep on my internal filter or else sleep on my heater stand why is it so ??
I also wanted to clean down surface of my tank without making problem to my gravel.
Sorry lot of question in one topic only