Instrument: Airstone

Instrument Short Name: Airstone
Instrument Description:

Airstone - Also called an aquarium bubbler, is a piece of aquarium furniture, traditionally a piece of limewood or porous stone, whose purpose is to gradually diffuse air into the tank, eliminating the noise and large bubbles of conventional air filtration systems

PI supplied instrument name: Microporous Ceramic Airstones
Dataset-specific description

In the laboratory experiments, Siderastrea siderea coral specimens from each of the 18 colonies were reared for 95 days (5 August − 8 November 2011) in each of twelve 38 L glass aquaria (18 specimens per tank; 216 specimens in total) filled with artificial seawater formulated at a salinity of 35 with Instant Ocean Sea Salt and deionized water. Four pCO2 partial pressures [324, 477, 604, and 2553) ppm)], established by mixing pure CO2 with compressed air using Aalborg mass flow controllers, were bubbled with microporous ceramic airstones into the triplicate glass aquaria (12 tanks total).  Coral specimens from each of the 18 colonies were reared in each of the 12 replicate tanks.  The pCO2 experiments were maintained at an average temperature of 28 ºC.