But, how could u say that my tank is 81L? The lfs told me based on the lbh of my tank, it is 100L.?

Hi K.Plesner, thnx. But, how could u say that my tank is 81L? The lfs told me based on the lbh of my tank, it is 100L. Also help me, if it is not suited for Ap.s, what other fish can I have? I dont want to have schooling fishes but only 4/5 fishes(apart from the bottom dwellers). And my tank is a higher rather than a long one. Plz help.