Does Time of Day Effect ALK Consumption?

[Dom]

Does the rate of ALK consumption in a reef tank change with the time of day?

Does your light schedule effect ALK in the way that it effects pH?

Does ALK consumption go down, up or remain the same with the lights on? With the lights off?

 

[lapin]

Do Corals Consume Alkalinity When the Lights Are Off?

Hello everyone, I was thinking about doing my calcium and alkalinity testing at night and dosing as needed but I wanted to dose my alkalinity in the morning. Would the alkalinity value change from when I turn the lights off to when they come on in the morning and is this a significant change...

www.reef2reef.com

 

[Dom]

Do Corals Consume Alkalinity When the Lights Are Off?

Hello everyone, I was thinking about doing my calcium and alkalinity testing at night and dosing as needed but I wanted to dose my alkalinity in the morning. Would the alkalinity value change from when I turn the lights off to when they come on in the morning and is this a significant change...

www.reef2reef.com

Yep... answers my question. Thank you!

 

[fromjuan]

They are all really interwoven... Lights will increase photosynthesis which consumes more CO2. This raises PH levels and Alk consumption.

 

[SuncrestReef]

My Trident helped me to identify the daily alk swing, then I adjusted my dosing schedule to counteract the extra consumption during the day, so now my alk levels are very consistent day and night:

 

[Dom]

They are all really interwoven... Lights will increase photosynthesis which consumes more CO2. This raises PH levels and Alk consumption.

... which means that you have greater consumption during the "day" (Lights on) than at "night" (Lights off).

I need to dose 15ml daily to keep my ALK levels in the 8-8.5 range. I'll dispense it when the lights are moonlight mode.