I am worried about my pleco becoming to large for the tank eventually, I had got him off of a friend who was giving away his fish from his fishtank and did not realize he required a such a large tank. He is now 6 years old and 6 inches long, I have had him in a 10 gallon for a while but he got to big so i recently bough a 25 gallon tall aqaurium. What should I do when he becomes to large for the new tank?

