Did that powerhead come with an alternate propeller? If so, you may try putting it together in the alternate configuration, point it up to cause ripples on the surface.Should I purchase another powerhead?
You need an alkalinity kit, I like the red sea kits, but at this point an api would probably be ok to get an idea of your alkalinity.
Have you checked out the stickies on setting up?
https://www.reef2reef.com/index.php?threads/138750/
You will probably need another powerhead at some point. Check out the Koralia series of powerheads, decent entry level powerheads, ime. These have a broader flow, where the one you have is more a jet stream and hard to direct.
You can also take some of your tank water in a container and put it outside with a air stone in it. (You could probably just stir it, if you don't have an air pump, though the Walmart sells a small battery powered one in the fishing tackle area for about $5. I keep these on hand for power outage). Let it run outside for half hour or so and then check the pH, see if it rises. Post back your results.



