I have a 990, but they are quite similar.
As stated above, fine mode gives you the best resolution, stick with it.
I tend to use fully automatic mode, but I sometimes use "Best Shot Mode"
Macro mode is fantastic for close ups. I have added Tiffen close up lenses +1 +2 +4 +7 & +10. Most of these
Macro Photos were taken with the +10 & +7 on the camera. Unfortunatly, the focus flower doesn't work properly with my lenses.
Take a lot of pictures, you are lucky if you get 1 out of 20 that are nice
I use MS image composer to size and crop my pics. I know there are probably some much better products out there for this, but it's all I have
I Usually angle my lens slightly down to avoid any extra light entering the lens to mess with the color balance.
Tanks Lights on... Room Lights off
Tripod helps for those closups
Turn the tank pumps off
I never use the flash