What fish are you reading about fish that live 1-4 years?
You don't "need" to add co2. If your lighting is high, you can have algae problems if you don't add co2. Your plants won't grow as well.
Pearl Gourami get to about 4" and are REALLY passive.
You don't "need" to add co2. If your lighting is high, you can have algae problems if you don't add co2. Your plants won't grow as well.
Pearl Gourami get to about 4" and are REALLY passive.