What is a safe way to clean the glass inside the tank? When I adopted Holly she came on sand (I know, I know not the best substrate) and it makes the inside of the glass dusty. Can I use vinegar and water or will the vinegar smell bother her?
I use a mixture of vinegar and water (approx 50/50 but I don't measure really) to do most of the cleaning and it works well. It does a nice job of cleaning the glass especially. Just make sure to remove her from the enclosure before doing any cleaning and dry it off well. While this does a very good job for basic cleanup and removing caked on items (dried salad pieces etc) it doesn't disinfect very strongly (it's only slightly acidic). For disinfecting items I use a small steam cleaner which is easy to use and works very well. Others use veterinary disinfectants like F10 which are also good if you want a chemical based cleaner.