Save up the posts. Use any free time when you are allowed to go online to learn on your own during school, then if you have learned something of interest about aquariums, post it
I hope you are a bright student with a good mind, and that you're hard working. These posts make you look like an elementary school kid. Too many more of them and it'll be hard for anyone to take what you post seriously when you have something to say.
I'm sitting on a chair posting this. Fascinating, right? Not.