not totally sure. i bought him with a 4 inch disc and im guessing its about 8 now and ive owned him around 8-11 mos cant really remember. will he hit a certain size then slow down? ive got him in a 180 which i believe is what you have as well. but from what ive read if he reaches 20+ inches ill have to buy a 300 gallon. how big is yours and how fast did it grow? I also think we have the same ray. here is a pic of mine. the first pic is a older one and the second pic you can see the little bite from the clown knife. its almost healed fully. mine is a little darker then yours but thats prolly the black sand. its a peru motoroGr8KarmaSF;1415724; said:Just wondering if you are aware of the fast growth rate of motorros?

