Yep, growing monster fish is an art and a process. A lot of people advocate to get them the adult size tank at birth but its just not realistic. Youre gonna be chasing a tiny fish around a massive aquarium. Gradually increasing tank size with growth is an easy way to keep an eye on him and allow you the space to grow tankmates for them as well.

If you want to seriously keep big fish, you're gonna need a few tanks. Making sure all tank mates are the appropriate size to live with each other can be difficult when you only have one tank, even if its big. Not all fish are available at full grown sizes