However, the tank itself may begin to accumulate algae and cleaning it can be a bother. To help cut down on cleaning, many people introduce a pleco fish to their goldfish tank. Plecos will naturally seek out and eat the algae and plant matter that can build up in a tank.
1) Your axie tank set up is so wrong - sorry! Gravel is a big no no and will lead to impaction which can kill your axie.The smallest tank for one goldfish is 60L. 100L for 3 or more. Goldfish are social fish so like to be in groups.

Choosing the Right Pleco Species for Your Goldfish Tank. Now, let's talk about the stars of the show (besides your goldfish, of course!): the Plecos. Not all Plecos are created equal, guys, and this is where a lot of people make a mistake.

Tank Set-up. 40 Gallon Breeder Tank.7. Rubbernose and Bristlenose Plecos. Both the rubber tip and bristle tip make excellent tankmates for a goldfish. Plecos are calm fish that generally leave your gold fish alone.

As we can see from the illustration, Setting Up A Tank For Goldfish And Plecos has many fascinating aspects to explore.
Here's your guide to setting up a tank for freshwater fish.One of the easiest community fish tanks you can have is a goldfish community tank. Goldfish can grow to considerable sizes, so be sure to take this into consideration when creating a goldfish community tank.