I just set up a new 65g Marineland tank with black caulking and the glass has a greenish tint to it. I have an Aqueon 75g tank that is very clear. The 65g is running a UV lamp and I know there is no algae bloom. I view length wise thru the tanks with white paper as a background. It's been like this since day one. Anyone notice their Marineland tank has a tint to it?