So my largest tank is definitely tiny to most on here its abit over 500lts then i have a 350 ltr and a 250ltr For the first copule years i didnt mind marching out 1million trips to the laundry and back with a 20ltr bucket but these days not so much. So i wonder if i can use my garden hose to fill the bugger up then dechlorinate it after filled. Say my jag tank when they are not breeding they are hardy enough fish to withstand abit of lazy abuse.? Annd if i dechlorinate for say 400ltrs with 100ltrs in the tank still... do i dechlor 400ltrs or add more because of 100lts in the tank still