Salt levels or Calcium will affect Colt Corals?

[paola98santana]

Hi:

I having problems keeping Colt corals in my tank, some people talked to me that salinity and calcium level will affect them.

My salinity is in 1.026 and the calcium always is above 560, I changed the salt and not add any supplement, but the calcium remains high
The soft corals shrinkled and died.

I have mushrooms, polyps, toadstools, kenias, leathers and spaghetti without problems.

My tank is a 55 gallons w/ T5 lighting for 7 hours per days.

Please advice

 

[AdamSabina]

Salt level is mostly about stability. It's not the level but more the change in level that bugs the coral. Was that number from a hydrometer or refractometer?


560 calcium won't hurt soft corals. Unless you are keeping hard coral don't worry about calcium. What did you dose to get there though? Purple up?

The only thing high calcium scares me about is if it precipitates your alk out of the water then you get PH swings. Have have ALK test or PH pen?

 

[MARINECRITTERS]

Get your calcium down, soft corals do use calcium in their scelerites ( spelling might be wrong ). It helps them stay upright.
Even though it will not effect them to the extent it will to hard corals, I would recommend getting them down in the 420 - 450 range any higher can lead to precipitates.

 

[paola98santana]

pH is in 8 and the alk is in 12.

The only damage corals are the Colts