so i wake up at 3 a.m. on a school night last night hearing a grinding sound:-(. i was hoping it was a serial killer... but no!:evil: when i put my glasses on and turned on the light there was a nearly empty sump and a water level in the display 2 inches under what it was. and a wet floor... so i waited till 6 30 when i woke back up and threw the the airstones in there to make a little oxygen and some circulation then after school i replaced the 3.5 gallons of saltwater and resealed the return pump ( i think the returne line leaked:-?...) set a lower gph rate to prevent leaking and restarted everything. so anyone else have this happen? i think it was a loose return line but i wanna be sure. :| yhanks for any comments!