Hello, I'm currently feeding my large Trimac, Jag and Dovii Hikari Massivore Delight. They love them and gobble them up. What is a pellet similar in size that has more nutritional value? I have Northfin large sinking pellets now but they are tiny compared to the massivore. Is there a pellet same size or larger than massivore that has the good nutritional value of NLS or Northfin? I've searched both sites and can't seem to find any. Thank in advance for advice!