Assuming no water changes, zero dosing, 0 TDS RODI water as top-off, and stony corals in the tank is it safe to assume salinty will decrease very slowly as the corals and other organisms grow?
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Why would it?Assuming no water changes, zero dosing, 0 TDS RODI water as top-off, and stony corals in the tank is it safe to assume salinty will decrease very slowly as the corals and other organisms grow?
My assumption (which very well could be wrong, which is why I'm asking someone like Randy) is that hobbiest level equipment includes trace amounts of other elements in what is summarized as "salinity". Therefore as consumption occurs salinty decreases. In other words, what we call salinty is more or less a composite measurement.Why would it?
Assuming no water changes, zero dosing, 0 TDS RODI water as top-off, and stony corals in the tank is it safe to assume salinty will decrease very slowly as the corals and other organisms grow?
With no water changes or dosing some of the the traces and other elements would get used up. Calcium would get somewhat used. Then no more is available or some crucial element is depleted so the consumption stalls. The total depleted, might amount to 0.001 specific gravity, as these are measured in ppm. Most of salinity is sodium and chloride which are not consumed in substantial amounts.
I'd guess salinity would drop from 1.026 to 1.025 or so and stay there.