I'm picking up a 265g tank some time next month off my friend he got a 500 lucky him but i was wondering if i could only put 150g of water in it for now cause my floor at my apt wont hold it and I'm moving in 2 years when my girl is done with school so my ? is what kind of filter could i use to do this if their is one havening it and not setting it up will kill me in time 
any help please

any help please