That one (or two....) speck of spot algae can be a real pain when you're targeted subjects are the size of your fingernail. I've still not had the big gear cooperate, I think I need to read a book about adjusting beyond intended ranges for lighting. I'm not even going to try to adjust the lighting for the camera, unless the thing will grow roots and make me 5 cameras from one or bloom or something. In the current world though, I've been working on getting some back up photos with my phone just in case; it doesn't have as big of a fit when moving from 1/1000s-i50 lighting (shooting the sun) straight to 3s-i3200(essentially a dark tunnel). Then the follow up trick of getting that fish to hold still a second lol.