All for reef question?

[Robertellis30]

I’ve read that calcium usually tests high when first starting to dose. Also magnesium is also testing high. Just curious how long that usually takes. When I tested a few days ago everything was in line. Only difference has been dosing 5ml of neonitro.

Completed a 10gal water change today. Salt mix is Kent reef salt. (I purchase weekly from lfs)

With all of that any help is appreciated!

Current system- rsr 300xl
Dosage amount- 11.5 ml

Test 8/14
Alk- 8.4
Cal- 587
Phos- .077
Mag- 1780
N03- 1
Salinity- 1.024
PH- 8.2
Temp- 79.2


Test 8/10
Phos- .092
Cal- 449
N03- .25
Mag- 1440
Alk- 8.6

 

[Ron Reefman]

I'm not sure what you mean by," I’ve read that calcium usually tests high when first starting to dose. Also magnesium is also testing high. Just curious how long that usually takes." Where did you read this?

If you add or dose Ca to the tank, it will be mixed with the rest of the tank water in a matter of minutes and it should NOT go up more after that.

I dose manually and only once a week. My Ca gets down to about 400 and I dose it back up to 425. If I test 5 minutes or 5 hours after I've dosed, the Ca level is still 425. Then, over the next 5 to 7 days it goes down about 3 per day. Alk does the same thing. Mg should stay much more stable as the tank does not use Mg anywhere close to as fast as it uses Ca and alk.

 

[Randy Holmes-Farley]

I'm confused by what you are saying and asking as well.

i suspect a big test error in the calcium rise. It didn't rise 130 ppm in 4 days from dosing unless you massively overdosed.

At the moment, i see no reason to be dosing anything. Just watch alkalinity and determine any need to dose anything from it.