Thanks for the input. I'm still working with the camera settings. But the biggest improvement by far was a tripod. Just couldn't get good picures before. I'm also trying to work out my glare problem. I think a big part of it is how the light fixture hangs over the sides of the tank because I used to have it over my 55 before downgrading to this 45.
And I need to get a copy of PS so I can edit photos.