Surface Agitation/Gas Exchange

[Rogue951]

for a 15 gallon I'd think the vortech on full would turn that thing to chowder.
but I got a MP20 on a 40 breeder and there's some good current from 3 inches below the water line so I'd think you're good.

[TheMikey]

It's set to 40%.

[Navarchus]

I love the pulse mode and find it as the best option....it cleans up your tank, agitate the water surfers, bring food to corals and wash them from mucus and stuff...