Agree with Cody on the 1.0 daily alk swing. Way too much for comfort. You may be able to get lucky and get away with it once or twice but keep that up consistently and it's STN and RTN party.
Sorry to hear about the coral since it has sentimental value. I personally use reef crystals and have not had a problem with it on an sps dominant tank (knock on wood)
I usually get the 200g box and test alk on each of the 4 individual bags before I use it. It could have been a bad batch but I kinda ruling that out just because of the alk swing you are experiencing. A doser to keep thing stable would be a great start. Good luck!
Sorry to hear about the coral since it has sentimental value. I personally use reef crystals and have not had a problem with it on an sps dominant tank (knock on wood)
I usually get the 200g box and test alk on each of the 4 individual bags before I use it. It could have been a bad batch but I kinda ruling that out just because of the alk swing you are experiencing. A doser to keep thing stable would be a great start. Good luck!