Oh wow! Beautiful numbers today Biscuit! Yes, testing is essential when they're hugging 'the line' like that! The trick is to test/feed so as not to let them drop down to visit the sharks. He's apparently found a terrific dose - so let him have it for as long as he can - and the trick to that is testing and feeding...if he gets too close to the line a little MC to steer him away from the 'edge' is a good idea...he's looking great!