Tank slightly out of level.. concern?

[125mph]

Tank is 120G, standard 4x2x2. Glass is 3/4" rimless. It's located in a room that is part of a home addition we built last year. When I put the tank in the room, it was perfectly level (as best I could remember)...

However, I just checked and back right corner is 1/16" higher than all the other corners. Maybe the floors settled in over the last few months. The tank is sitting on a 3/4" foam board on top of the stand.

Should this be a concern or only small issue. I was thinking try to make an adjustment next time I clean out the sump, maybe in 6 months. Or should this be immediate concern?

 

[power boat jim]

I would not be concernerd about a 1/16 of an inch. There are several reasons wood floors and joists could move that amount. Measure it again in six months.

 

[Potatohead]

Not a concern IMO. 1/4" I would be concerned.