Soo I just tested my Catalina water for Calcium and Magnesium.
Magnesium-1260 with Salifert test (in past it's been right around 1300)
Calcium- 410
The driver that delivers water to me said they go to long beach aquarium a few times a week with water deliveries. I did hear that too that they now take water from the local harbor vrs out at Catalina.
I've been banging my head against the wall trying to figure out some coral browning in my coral grow and a few clients tanks... I found iodide to be almost traceless in tanks that are doing bad,...... and Catalina water itself is almost traceless of iodide with my Salifert test... I've used Catalina water for about a year now and it seemed to give amazing results,...But something has been off the past couple months and I'm not too sure what else it could be
Several aquariums I use 0 TDS water with tropic marin salt & they are rocking... Only Tanks where I use Catalina water are sad now.