Ok so I've had my 20 gal tank for like a month and a half. I got some fish in there but I have a common pleco. I recently found out they grow to be huge! He's like 3 inches rn. How long can I keep him in my 20 gal before he grows too big. I really want to keep him. The only problem rn is that his is huge. Also just an extra question, I bought a gravel vac but it barely has any suction power. Any tips on that? Thanks
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