He looks good Jacob. If you keep doing what you are doing, you won't see any pyramiding at all when he gets bigger. I've seen some that were fairly pyramided at 6" and totally smooth as adults. Yours only shows the slightest signs of raised growth lines. I think he's going to be pretty smooth from here on out. He's got interesting color too. Time for a bigger bowl that he can't reach the top of. I found plastic dish washing tubs at Walmart for $2.25. They are working great for me.