Filter necessary for 2.5G planted tank?
Hello, I have a question for the sake of my curiosity. I've been doing some research on how much an impact a filter can have on your planted aquarium. There are a lot of different reasons on why it is recommended but they all come to the same consensus that a filter will improve the tank.
So I have right now a rectangular (6" x 12") 2.5-gallon tank with a mystery snail, a betta fish, and three plants: Anubias Nana, Marimo moss ball (around 1.5 inches in diameter), and Windelov Java Fern. I have a lamp that definitely serves more than adequate enough light, so that area is covered. My question is that, do I really require a filter? If so, how long should it leave it on per day? I was under the impression that the filter would remove necessary elements and nutrients from the plants. I have a Whisper 4i as a backup in case the plants suddenly die one day. I also have Seachem Flourish if things really come to that.
I can post pictures of the tank if you guys would like to make further assessments.