#microscope

bought this coral a few days aggo and noticed some wierd things on this plug if someone has a clue let me know :D

Hi, Would anyone be able to identify this species? It’s motile, green, and oval shaped. I cultured it in standard salinity saltwater. Other than that, I only have a Chinese name 扁藻. Sorry for the poor quality microscopy. Thanks, Adam

Why would my fallowing tank of about 1 - 1.5 weeks be cloudy? Should this be of concern? I have a microscope if you'd like me to take a sample. Tank is 4 months old, fallowing for diseases for 1.5 weeks so far.

I am looking to identify my dino species but can't really spend a whole lot on a microscope. I am not exactly sure what magnification I would need but I was guessing 400x (4000 times) in order to properly see them. My main concern is price but also that I won't waste my money on some shakey...