High Calcium and Magnesium

[Mattgee]

Morning All

i test regularly every Sunday morning and the last few weeks noticed how high my calcium and magnesium are. Currently not dosing anything to the tank and using Red Sea Max Coral Pro. Salinity is also slightly high but will be doing a 10% water change today.
Shall I mix to a slightly lower salinity to balance or just mix to my normal 35ppt?

Have a handful of small frags in the tank both SPS and LPS but nothing of significant size and all seem to be doing well and showing signs of growth.

Copy of todays parameter

Any advice would be great or does everything seem ok and I leave the levels to settle naturally

Thanks

 

[Spare time]

Just mix it to your normal salinity if only those are high. Otherwise you will lower every other element.


On a side note, consider finding a means to having a higher pH. 7.9 is rather low. Out of curiosity, Do you know what it goes to at night time?

 

[Mattgee]

Just mix it to your normal salinity if only those are high. Otherwise you will lower every other element.


On a side note, consider finding a means to having a higher pH. 7.9 is rather low. Out of curiosity, Do you know what it goes to at night time?

Actually not sure about that. Will look to take a reading around 10pm uk time tonight. Any suggestions on best and easiest way to raise ph?

 

[Randy Holmes-Farley Verified Community Expert]

Are you dosing that could account for those high values?

if not, then I would just lower the salinity.

 

[Mattgee]

Are you dosing that could account for those high values?

if not, then I would just lower the salinity.

Hi Randy; thanks for your reply.
currently not dosing anything at all. Have just done another test using the Hannah ph tester and its come back at 7.8. It’s currently midday here in the uk and I recalibrated the unit this morning. Have done the water change yet as was awaiting advise on what best salinity level to work too.

thanks

 

[Randy Holmes-Farley Verified Community Expert]

Hi Randy; thanks for your reply.
currently not dosing anything at all. Have just done another test using the Hannah ph tester and its come back at 7.8. It’s currently midday here in the uk and I recalibrated the unit this morning. Have done the water change yet as was awaiting advise on what best salinity level to work too.

thanks

I'd allow the salinity to drop to 35 ppt.

 

[DOJOLOACH]

I had this exact same issue and I'm fixing it now. Turns out my refractometer was wacked out of calibration by 4 ppt!

 

[Spare time]

I had this exact same issue and I'm fixing it now. Turns out my refractometer was wacked out of calibration by 4 ppt!

Honestly I rarely use my refractometer because my hydrometer measures the same and I don't have to calibrate it lol

 

[Spare time]

Actually not sure about that. Will look to take a reading around 10pm uk time tonight. Any suggestions on best and easiest way to raise ph?

Refugiums, alk supplements like soda ash, etc. can help.

 

[Mattgee]

Refugiums, alk supplements like soda ash, etc. can help.

Alk is already at 10.2 dkh so don’t reallly want to raise that anymore.

 

[Spare time]

Alk is already at 10.2 dkh so don’t reallly want to raise that anymore.

Oh I just meant as a replacement for whatever alk supplement you use currently.