Question, ph questions, is this normal??

[scott11106]

so i noticed my tank has a pattern that the ph rises in day and falls at nite, i know this is somewhat normal but i have 2 kessil h80's running in my refugium at nite and wanted to make sure there was not a problem.

i was thinking that the high vs low should not be so drastic?

 

[Randy Holmes-Farley Verified Community Expert]

That range looks perfectly fine and normal.

This has more:

pH And The Reef Aquarium
http://www.reefedition.com/ph-and-the-reef-aquarium/

 

[scott11106]

That range looks perfectly fine and normal.

This has more:

pH And The Reef Aquarium
http://www.reefedition.com/ph-and-the-reef-aquarium/

ok, thanks. i am going off to read but i appreciate the quick response as i thought so but was not sure and did not know if there were any ways to minimize the high/low other than light in refugium

 

[Randy Holmes-Farley Verified Community Expert]

ok, thanks. i am going off to read but i appreciate the quick response as i thought so but was not sure and did not know if there were any ways to minimize the high/low other than light in refugium

The more aeration you have, in addition to balancing photosynthesis as you indicate, the lower the daily pH swing is, but the swing itself isn't generally an issue. Only the extremes attained during the swing.