two weeks ago I sold all my fish in a 90gallon with FX6 filter running.... after the fish was sold, filter and heater stilll running for the past two weeks and WC weekly..
After two weeks without any fish I assume all the GOOD B.B. would die off since no ammonia to feed off good B.B.
Today I tested the water parameter with new purchase API test kit... all the water parameter looks perfect beside Nitrate is at 5.0PPM which I am going to do a 60% water change..
Base on the result am I safe to put new fish into the tank ? See screenshot
After two weeks without any fish I assume all the GOOD B.B. would die off since no ammonia to feed off good B.B.
Today I tested the water parameter with new purchase API test kit... all the water parameter looks perfect beside Nitrate is at 5.0PPM which I am going to do a 60% water change..
Base on the result am I safe to put new fish into the tank ? See screenshot