Temperature and light drove significant differences (p<0.0001) in the Chlorophyll a content per symbiont cell, but not Chlorophyll c2 content per cell (Table 2). Chlorophyll a content per Symbiondinium cell was higher in low light (4.63x10-6±7.89x10-8 s.e. µg per cell) compared to high light (3.86x10-6±9.46x10-8 s.e. µg per cell) and lower at low temperature (3.85x10-6±7.27x10-8 s.e. µg per cell) compared to high temperature (4.74x10-6 ±9.19x10-8 s.e. µg per cell). However, there was no significant difference in Chlorophyll a per Symbiodinium cell for pCO2 or for any treatment interactions (Table 2). Chlorophyll c2 was not significantly different among any of the treatments (Table 2).