I'm new with saltwater tanks, I have a month with my 15 gallon aqueon column. I'm currently running hob filter rated for 30 gallon. I want to upgrade that to ether an aquaclear 110 or a 2.5 gallon sump. That is all I can fit under the tank. I'm planning to have 3 fishes and some corals. What is more beneficial the aquaclear hob or 2.5 g sump.