So I built a stand for my 450 gallon out if 2x6s I'll post pics in an hour when I get home but I realized I used 1/2" plywood to cover the top of the frame instead of 3/4" is it a big deal? Have 3/4" foam on top of the plywood, and I placed my level atop of the tank and it's perfectly flat and level on the stand, should I be concerned?

