craig_will2513
Aquarium Advice Freak
right i had problems with my nitrate.. since iv got an ro unit and red sea salt so good stuff. tuesday night i almost emptied my tank (125litres) maybe 3 inch water in the bottom. i then today changed another 50 litres. when i change the water will all the good bacteria go to and will i have to wait a while to see any difference in my parameters or will it be instant. as iv tested about hour after the second change and its hardly moved