Salinity dropping why?

[Zoaelite]

Originally Posted by lastlight

Salt will sometimes migrate to areas of lower concentration (Diffusion). To combat this line the rim of your tank with something saltier than the tank's water. This will effectively contain your salinity.

I'd recommend a MFF or McDonald's Fry Fence.

I personally use the KFC double down, works for a salinity perimeter and nothing beats the angina after eating one.

Unless you have a secret leak there should be no other way for your salinity to drop like that, are you sure your initial measurement was correct?
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