Originally Posted by tbrock
I guess i know, but dont really understand. A lot of people use this salt, seaham said his calcium tested the same with fresh salt water and he has low calcium in his tank, how could that be? coral taking in alot of calcium?
I would only be guessing without alot more info but heavy CaCO3
consumption would be a good guess, that or precip and heavy skimming. Keep in mind that a tank with some sort of draw of the chemistry plus most peoples water changes will only be a small percentage of the total water volume so the net change is not normally that much. If there is little CaCO3
use within the tank, repeated water change will eventually cause the reading in the tank to match the salt +/-
I will try to switch, but it wont be easy, the only salt i can get here is oceanic. What kind of salt do you use. Thanks for helping me find the problem.
Anything that gets you closer to NSW
values. Even if the salt is on the higher side, as long as it's balanced or can be tweeked before use to get a balanced chem. The salt you have now cannot be altered effectively. Personally I use Kent Marine but there are many available that you can work with once you know their limitations. Online shipping can be a bit pricey for freight but have you looked at different LFS