So since its raining and miserable out today it a great day for total Maintenace to be done on tank and equipment, so I started the day off by giving my Mp40's wet side a Vinegar/ Hot RODI water bath, cleaned out skimmer, change filter socks and washed old ones,and wiped down sump outside walls,and rim trying to get it looking a little better. Wiped outside lights down with warm water to get dust off..and just tried to clean everything up not that's it's been neglected but a good overall cleaning was good to do... What have you done to your tank today....