-Check for livestock

-Clean protein skimmer cup

-check for stable temperature

-remove uneaten food

-check equipment

-make sure water is adequately filled up

-remove any salt build up

-add trace elements, pH buffers, vitamins

-clean off front glass of tank, etc.

-replace filter floss in canister filter

-test ammonia, nitrite, nitrate, pH, etc.

-clean off salt on lights

-do periodical water changes

-fill in evaporated water

-clean pre-filters and systems tanks

-clean off algae on front, sides, etc of glass

-change damaged pump impellers

-change air valves

-replace ultra violet tubes

-buy new lighting if damaged or worn out

-clean protein skimmer

-check all connections

-replace air stones, and in skimmers

-change carbon source

-clean canister filter hoses with brushes

-change air pads in air pumps