The pond is completed earlier today, I need to waterproof those two access panel.
Let it dry for a few days then over the weekend I'll get some plastic coated canvas to cover the panels.
Cement tank need sometime to be conditioned, otherwise it maybe fatal for the fishes. So it'll be a wadding pool for a month or so.
The guy that made the pool said, best to use Pineapple peelings, just leave it in the pool for few days and check the water quality.
The old fashion way he said use a cheap fish, those not so tough one. If they survive then its ok. I think getting a Ph meter is a better option for me.