Dear all,
I have a 7K gallons pond. Filter : Sieve filter -> Ultima II 10,000 gallon bead filter
-> Shower filter (8-10 cubic of feather rock)
I started to see my Kois getting redness on theirs skin and fins plus scratching at the bottom. On top of that, water is not clear as it should be. I have changed 10%-15% water daily for a week. I also added Melafix Pond(700ml) after the water changes (1 week). I did not forget to add bacteria powder everyday(1 week) . After a lot of effort and spending a lot of money, my fishes do not getting better and water is still not clear.
Could you please help me
Thanks