|
The sediment that is accumulating on the rock is physically breaking the rock down. Bacteria that break down the dust will aggressivly break down any rock it sits on! This may release phosphates that would otherwise be non-existant.
Also, if your lights are producing too much red spectrum, which encourages the growth of cyano, this will give you the bubble effect. If I don't miss my guess, you see more bubbles/algae at the end of the day?
If your calcium is truly that high, it is almost impossible for your KH to be anywhere near the desired range. They work off of each other, and will pull each other out of solution if above acceptable parameters. Try a different KH test kit.
Maybe do partial water changes to bring down the calcium gradually.
|