I’m a beginner, and after doing hours (quite possibly over 24 hours total LOL) of research, I thin I’m ready to start up my freshwater aquarium. Also, I have a 25 gallon aquarium.
First off– Can/should I put my plants in before I put my fish in, or do I need the fish to supply the proper nutrients to the plants? If I DO put the plants in first, will that speed up the nitrogen cycle and make my tank healthier?
Second off– What should be my starter fish? I’m going to build up slowly and just get a school of either Cherry Barbs (preferably, but I’m not sure if they’re a very good beginner fish… some sources say they are, others not.) Harlequin Rasbora, Zebra Danios (rather not get these, but they seem to be the best choice) I also want a bunch of cory cats but I’m not too sure if they should be what I start out with.
What kind of filter should I get? Apparently undergravel filters are the worst, and bio-wheel filters are the “best.” Does it really matter?
What are some good invertebrates to be added to my aquarium that won’t consume plant life? I’m leaning towards Glass Shrimp and maybe Amano Shrimp when my tank is more mature and there’s more algae around. Possibly some nerites as well– I’d like a few apple snails but I don’t want them eating my plants! Also… Seeing as Glass shrimp and Cory cats are both bottom feeders/scavengers/whatever, would it be okay to have a school of cory cats (probably 5-7) as well as a few Glass shrimp or would there not be enough food for them? (Though, I suppose I’ll still be feeding them daily…)
Alright, sorry for all the questions, lol. I’m just a nervous new aquarium keeper who’s a perfectionist 
Thanks for reading and your answers in advance! Also, if possible, please answer each question individually… Sorry about having so many, haha. 
