Ok so I have a sumpless 40b with the large CPR hob refugium. The thing is huge but so far I love it. I have no filtration and want to add something small to skim the surface and catch a little extra debris. I was looking at the Rio hob nano filter/skimmer and like that it is a dual function. If I were to get that and run with a poly pad would chaeto still survive in my refugium? Would I benefit at all with the small upgrade?