Hey guys! I have a tiny question.. I have a small 2.5 gallon tank which I'm planning to plant it! I might add 3 cheery shrimps later on but I'm not sure and I also found what kind of plants I will put inside, such as java moss, anubia nana, Amazon frogbit and hornwort. Anyways, the question is.. if I do water changes every week, will a filter be still necessary? Do I need filter...? Since there are no fish?
