I buy new kits about every 3 months, so not very old. I have another unopened one so I will try that tomorrow. How much will alk affect clams?
I put a second 8" teardrop into the QT and it seems to be responding well. Both of these clams had some white variegated sponge on them.
I am hoping one of the clam pros will post about pH, salinity, and alk.