Magnesium levels?

[mark]

Measured Mg and different times over periods of days and always seemed to go down but then never did back to back am/pm testing. Does seem though like a really large swing.

Am interested in what others say as just started dosing Mg for bryopsis.

[Douglas]

After thinking about it for a bit here, I have come to my own detemination, and hopefully this is correct. With the water level lowering during the day, due to evaporation, The magnisium level rises, like my saline level. The auto topoff kicks in, and tops off the tank over night, usually. Will test in the morning, like usual. And will do water change, to try to lower possible overdosed mag level.

[mark]

don't make me do the math, but if due evap, still seems a huge swing.

[lorenz0]

what are you measuring with? when ever I test, I always test 3 times to make sure my final conclusion is consistent

[Douglas]

I'm using an Elos Mag test kit. Bought two weeks ago. Best before date 12/12