ok, my 180L tank which is 101 cm long. can i have a pleco in it or will it outgrow my tank i know u can get smaller 1;s but my mrs has got her heart set on a royal pleco?
Depends are you willing to get a bigger tank? at least 6ft long if you want to keep it when its large. If not then no, royals do grow slow so you would have time to make arangements for the future however it will grow out of that juwel tank no problem.