Currently, I am using Kent-CB 2 part with good results, but it requires daily additions or my Ca drops very quickly.
I was perusing my local LFS today, saw the blocks, and decided to give them a whirl. The blocks look like a 3/4" square of white plaster. I threw 2 of them in my tank and will post results here for as long as I stay interested
I bought a PH test today, as normally I don't bother measuring PH. After using the test, I decided it was garbage because it has a color for 8.0 and 8.5 but I need 8.2 for sea water. Grrr. I guess that I will just rely on the buffers in my salt mix to handle the PH.
So, day 1, before adding the blocks:
Ca - 396 mg/l
Alk - 11 dkh
Anyone else using this stuff please pitch in.