My coralline algae has been growing just nicely, but it has now stopped and started to recede. I suspect the calcium level has dropped. It is reading 250ppm which I believe is way too low. I have ordered some Kent Turbo Calcium but won't reach me for another couple of days.
Is my assumption correct that the calcium is too low? And how long does it take for the coral algae to recover once the right level of calcium is topped up?
Is my assumption correct that the calcium is too low? And how long does it take for the coral algae to recover once the right level of calcium is topped up?