Is an 18-gallon aquarium tank large enough for a beginner?

Yes, if you've got the space, that's great. I've only had room for 10 gallon tanks, but if I had the space, I'd get larger. And yes, when they get below 10 they can be challenging to maintain stable parameters. read more

I would probably recommend something between 30 gallons and 50 gallons for a beginner, they are big enough to not have to worry about the water conditions constantly but not too big where it is over your head in terms of cost and maintenance. read more

Beginner with a 20 gallon Hi i just got a 20 gallon tank from a neighbor i haven't even washed it yet, since this is my first time i just want to know what the easiest Stock of fish would be thats still very easy to maintain but still beautiful to look at. read more