Water tanks cleaned

It’s quite a big job really, unscrew table, lift big “floorboard” 1.6 x 1.6M x 36mm maybe, unbolt the dogs on the access hatch x 8, pump out the pink antifreeze stuff and carry it up to toilet bucket at a time, clean, reverse refitting. On future occasions I think I’ll just drain the tank and leave the boards up and hatches open if I am winterising, put some anti freeze in the pumps and head, secondary raw water cooling etc. It would for sure be less work. Gosh, this boating stuff is quite a pallava..