What is great for seeing what is in your water? A microscope of course, and now you can with the DR Instruments Reefer’s Digi-Microscope. The very cool thing is that you can connect this microscope to your computer (Windows 98, 98se, 2000, and XP.) and see everything that is in your saltwater. A very cool thing indeed. Comes complete, view slides, photograph images, record videos, or use included software to save and edit digital photos. Equipped with two LED illumination sources and features up to 400X magnification. You can buy only for around $179 or through your local fish store.