How new is ur tank? If ur skimmer unable to collect anything, u can try close the valve a bit, that will bring the bubble lv higher. Sent from my SM-G950F using Tapatalk
Thks for the sharing..i think the design of the ios play a part oso..shall see how it goes yea will consult my tank maker about this too..overall the ATO shd b set at the return pump area so as to prevent it running dry..