Trouble raising Ca.

[acid_burn]

I recently switched to B-ionic 2 part buffer, previously was using Seachem Reef Complete to raise Ca. With the seachem I could never get Ca over 375ppm, and so far using the B-ionic I still cant get it over 375ppm. I dont use the Alk. step everyday, cause my Alk is always at 3meg. Is it possible i'm guessing my water capacity wrong, its a 120gal. with 180lb DSB, about 125-140lbs LR/base rock? I was dosing for around 90gal of water?

I dosed 20ml today, can I dose more?

Thanks,
Rich

 

[Atari]

Not sure about your dosing... but it might be worth getting a Mg test kit.

 

[captivereefs]

Low magnesium is your problem. Pick up a salifert magneium test kit and some magnesium supplement and this should solve your problem..