Tank dilemma

[Pescador]

Ditto on finishing up to the tank. If it's even possible with your old flooring.
After considering different flooring options for the fishroom to try and make it waterproof, it was cheaper to use laminate and replace it if there was any water damage.
But for a bargain laminate I'm pretty impressed how it is standing up to water around the tank. We just saved a couple bundles to finish it if we move.