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Originally Posted by nvladik
Have any more details on this? My Alk suddenly dropped after caralline/diatoms showed up, and now some coraline is looking whiteish. is it dead?
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Yeah, March 3 dKH tested at 8.2, (Ca 460) which is low for my tank. Usually 9+. So I added enough to push it to 9.
As dinos declined, coralline growth took off, covering my back glass which gets direct sun - didn't expect it to thrive under straight sunlight.
Few days ago a couple of corals closed, I realized coralline seemed to have slowed, tube worms and clams didn't have much bright white new growth at the end of their growth area, so I tested water again - 6.1 dKH. (420 Ca)
So I added baking soda. Spreading it over a few days, since I'm going 6 to 9.