Hello, I have very regrettably neglected my fish tank after a big move for a year and I'm finally settled in and ready to get it back to its former glory. I have not been doing my usual amount of water changes and I understand the tank is in rough shape. All the equipment has been running, but my pump just died last week so the only water flow the rock is getting is from the magnet propeller things (forget what they are called). The tank still houses a Dotty back and 2 clowns. What do I need to do to get this tank back to proper working order besides a lot of water changes? Is this live rock still alive? Do I need to buy new ones? Should I scrub the algae from the rocks? What to do with Filter media in the sump? Please help