Individual inanga
(n = 6, mass ranging from 0.4 to 1.2 g) were placed in separate
250 mL round plastic containers (diameter: 8.5 cm, height: 5 cm)
of constantly aerated Na+-free experimental water consisting of
1 mM Ca2+ (added as calcium acetate) and pH adjusted to 7 by
adding either KOH or HCl