Tokis-Phoenix
^_^
125gal tanks= 3hours minimum to clean a single one of them out for me (40% water change, clean out filters, clean substrate, clean glass, check planting is ok etc). So i rarely do them all in a single day as there's 3 of them in total, the longest i ever took was around 5-6 hours (that was a major tank clean though after a holiday) The quickest i ever took to do one of them was an hour (the goldfish tank is actually the easiest and quickest of them to do, always stays quite clean despite goldfish having a big reputation for being messy fish).
5gallon quarentine tank= 5 minutes maximum.
5gallon quarentine tank= 5 minutes maximum.