I think I will do a small one. Also there's a lot of grime and stuff on the gravel, should I do a gravel vac and get rid of it all? I think I read somewhere not to gravel vac during cycling, but I'm not sure.
Given that you don't have an undergravel filter, I can't see any reason not to vacuum.
Listen to waterdrop, of course.
I'll let you in on a little secret: I might be getting a 60 litre tank in about a month and it will be the first fish-less cycle I had ever done on my own tanks (I've cycled plenty for other people) and the first one in a few years that I've overseen/done in person. I'll keep a log and you can laugh at me when I mess it up somehow
