You are spot on. The skimmer helps dissolve oxygen in the water much like an airstone in a FW aquarium. CO2 is acidic and as it builds up in the water it lowers the pH, a skimmer helps add oxygen to the water bringing up the pH.
Other things that can affect the pH are surface agitation (adequate surface agitation will promote good gas exchange thus raising the pH). Temperature also plays a large role as cooler water holds much more oxygen than warmer water does (another reason to run our tanks at 76 or so instead of 80 or more).
Topic Options
Post Options
Thanks(0)
