What are /r/underthemicroscope's favorite Products & Services?

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https://www.amazon.co.uk/gp/product/B004QEFO1Q/

AMScope T490B, with a Canon 7D M2 on the top using a 3D printed tube and a sneeky little iris also 3D printed to stop middle image glare. I used some 3D printed DIY darkfield shields that sit in the condenser color filter.

The Canon's used for photography too, so I get lots of use of it, finding it could go on the top of the microscope saved lots of money buying a custom microscope sensor. The blue filter (because it's an orangy xenon bulb, not LED... sits in a little 3D printed stand just over the bulb.

This is the slides I have been using. Could these be causing the issue? https://www.amazon.com/gp/product/B002OS6D9I/ref=oh_aui_detailpage_o01_s00?ie=UTF8&th=1 About the product This is a package of pre-cleaned 72 piece microscope blank slides and 100 piece 22mmx22mm square cover slips Glass Blank Slides: 1" x 3" x 0.04" (25.4x76.2x1mm) Glass Cover Slips: 7/8 x 7/8 x 0.006" (18x18x0.13mm) Material: optical glass Finished with ground edge