Not sure where you got that from, the tank is more like 1170 litres. The actual volume will be a bit less, but the total weight will be a lot more. A tank that tall should be made of at least 12mm glass so will probably weigh close to 200kg empty, plus the weight of the stand.
Not all timber floors are created equally,its not impossible but I certainly wouldn't just plonk it anywhere and hope for the best. You need to get under the house and see what the subfloor is like and which way the joists run. Choose a location where it will be well supported, reinforce if necessary, and make sure it is running across as many joists as possible (not in the same direction as them). The stand also needs to be designed to distribute the weight over as large a footprint as possible, and not just put it all on 6-8 'feet'.
And its probably a good idea to check with your landlord before doing this....