...i tink enough liao....but i may be wrong....
calculate ....rio32f@8000l/hr + m820@3200l/hrx2...total...14000l/hr.. n ur tank 3x2x2.......powerful enough liao....
seen its personally....the bubble are not big but DAMN big.........
good specimen.............
luckily my tank is fowlr......if not i'm first in queue for the BIG BUBBLES
UPPPZZZZZ