I have had a green carpet for just about a year now. When I bought him he was about 3 in in dia. He currently is about 13-14 now maybe more when fully opens up after a nice feeding. I feed many things as I make up his food, I use fresh squid, (he loves scallops and will stuff his face quick with them), shrimp. I keep placing chunks on him untill he complely turns into himself. I feed him once a week. Somtimes shows hunger midweek when I feed the tank and his mouth starts bulging and I will give him a smaller meal. I hand feed with long clear (3" dia) tube as he will sting you if touched with out surgical gloves
All I do is buy these at the market cut it up in chunks and mix together then freeze
His name is Maytag, as we all know he may do to any fish in my tank, but so far so good, and he is rather a nice size carpet! He is the only fish muncher I own.
I think that pick of that carpet above is a "purple" carpet.