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Specific Gravity/Salinity Levels

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johnehr

Ignorant and Oblivious
Joined
Sep 19, 2004
Messages
210
Location
Seattle
How harmful are high sp readings? I just noticed that my SG on my hydrometer was about 1.028... I was attempting to keep it at 1.025 but I guess I messed up adding more during water changes than I was taking out. What can this level of salinity kill?

Doh! I screwed something else up now that my nitrates are almost 0.
 

mojoreef

Reef Keeper
Joined
Jul 5, 2003
Messages
7,530
Location
Sumner
1.028 wont kill your corals, corals are used to small slow swings in SG from rainfall and so on, its more of a matter of how quickly and how large of a swing. Just slowly bring it back down to where it should be.


Mike
 

iamjosh

Well-known member
Joined
Feb 22, 2004
Messages
265
Location
Spokane, WA
John, Make sure to check your Swing arm as well, they can be calibrated off a point or two depending so I'd go to the LFS and ask them to check your's vs. their expensive one that way you can make sure you have an accurate reading.

From every horror story I've heard its a combo of things, High Nitrates , Poor FLow, SG that was off that cause bad things to happen.

Also remember when adding water to compinsate for evap you don't need to add salt, I guess I didn't read that anywhere, found that out before it ever caused problems but its good to learn from others mistakes.
 
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