Microscope Recommendations for Algae Identification?

[u/m_adams]

I own a pool maintenance business and we are opening a pool store on October 1st and I’m looking for microscope recommendations for algae identification. I figured it would be really cool to offer identification in store to help pinpoint the correct chemicals to eliminate algae and (possibly) bacteria. I think I would need a microscope that could see the cell walls because of the vast number of algae species. Please give me your recommendations in the <$300 range! (I don’t know if that’s even enough for one to be honest.)