- Joined
- Mar 1, 2018
- Messages
- 439
- Reaction score
- 303
I have been having an issue where my alk is not dropping and when I say not dropping it’s been almost 2 months and it’s been the same. I have 2 redsea test kits that I measured 8.8-9.0 on both kits. In the last 2 weeks I bought a Hanna checker and it has measured 8.7 for 2 weeks. The redsea still measures 8.8-9.0. Tank is newer but I’m getting good coraline growth and 20 plus frags that are growing. My calcium has maybe dropped 10-20 ppm in the same time frame. I only top off with ro/di water and have not done a water change in over 2 months. Only thing I can contribute it to is a few pieces of shelf life rock. I just find it very odd that calcium and alk have been steady for so long. Is this a problem or just good luck?