1)Started my FOWLR 4x2x2 tank app a month ago with 5" dsb. Realise that my dsb is giving out bubbles. Can anyone explain wat happen?
2)Also since my tank is so new, I tried adding market prawn to kickstart cycling. I used all the ceramic substrate in my old 2feet setup and dump them all in the 2.5" sump. Since the market prawn is added, I expect the NH4 and NO2 to peak and go thru another cycling process. However, when I measure the NH4 and NO2 every three four days, it is always at zero. I am not sure why also. Could it be that the old substrate help to "stablise" my new tank. Thanks