I am Allen from Singapore. At the moment, i am keeping arowana's. I have 3 Super Reds, 1 Cross Back, 1 RTG and 7 Chilli Reds. They vary from 8" to 20" in size.
I have two 4' tanks, two 5' tanks, one 6' tank, one fiber glass tank 8'X4'X4', another fiber glass tank 8'X4'X3' and a 10'X10'X4" concrete pond.
Besides arowana, i keep cat fish, gourami, rays, turtles and some other assorted fishes.
I was wondering whether anyone can advise me on my concrete pond. I have just constructed the pond but is unsure how i can treat the water. I understand that the first time i fill-up the pond, i must add salt and let it circulate for a few days. Than, i have to empty the pond and re-fill it up again. Personally, that is a lot of water to waste. Is there any other way to treat the water? Please advise if you have gone through this process before.
Thanking all in advance.