He needs more flow, problem is his frag tank as about 6' off the ground. Most smaller pumps ( pan world, Iwaki) loose a lot of flow by the time they get that high. A dart would give a good amount of flow at that height at a much better wattage however, he only has a 1" bulkhead installed.So going with a larger flow pump like a blue line 70 he will get the flow he needs to the frag tank as well as feed the main tank and the calcium reactor.