A large angelfish aquarium is a long commitment disguised as furniture. Angelfish grow tall, live for years, and need a deep, settled tank, so a renter who sets one up is really signing for the fish, the water, and the move at the end of the tenancy all at once. The checks below come before any water goes in, because every one of them is easy on paper and awkward with a filled tank standing in the room.
Permission in Writing, First
Get the landlord's written permission before buying anything. Some leases exclude large aquariums outright, others allow fish but not a tank of this size, and a verbal yes at a viewing is hard to prove when a deposit is argued over later. An email or a signed note naming the tank, its size, and where it will stand protects the tenancy and the deposit together. If permission is refused, that answer, however disappointing, has saved the cost of a setup that would have to be torn down. Keep the written permission with the tenancy paperwork, and tell the landlord about any change of tank or room before it happens rather than after.
Weight, Floor, and the Leak Path
Do the weight arithmetic honestly. A filled aquarium weighs roughly ten pounds per gallon once water, glass, substrate, and stand are counted, so a large tank concentrates the load of several adults onto four small feet. Check the floor: solid ground floors carry this easily, while upper wooden floors want the tank placed along a supporting wall, on a stand that spreads the load, and never on a bowed or springy span. Then site for the leak you hope never happens. Put a waterproof mat under the stand, keep the tank away from the worst damage path, not above a neighbor's ceiling center, not where a leak would run straight into electrics or the landlord's fitted flooring, and leave room to get a towel and a bucket on every side. A slow weep found early on a mat is a maintenance note; the same weep soaking through a floor for a month is a bill.
Insurance and the Move at the End
Check insurance before filling, not after a leak. Contents policies vary on water damage from aquariums, and the landlord's building cover does not protect the renter's belongings or liability, so confirm in plain terms what is covered and what excess would apply. Finally, settle how the tank will be emptied and moved when the tenancy ends, before a single gallon goes in: how the angelfish will be caught and held, where they go on moving day, who helps lift the empty tank, and how long the room needs to dry and be checked before the deposit inspection. Angelfish are territorial and stress easily, so their move wants bags, a dark holding container, and the shortest possible gap between tanks, all decided calmly months ahead rather than improvised on the day.
Two smaller checks sit with the big ones. Level the stand before filling and check it again once the tank is full, because a large aquarium that sits even slightly twisted puts uneven stress on its seams for years. And measure the room for the fish themselves: angelfish grow tall rather than long, they claim vertical territory around plants and wood, and a tank squeezed into a dark hallway corner gives them neither the height nor the calm viewing side that keeps them settled and lets you spot a torn fin or a fish hanging at the surface early.
None of these checks belongs to one person alone when a household shares the tank, so the permission, the weight figures, the insurance note, and the move plan belong on the Family Sharing page as one shared household plan. Shared through the Family Sharing page on KinsLe, those checks stay visible to the whole household long after setup day.