Question about dosing

[nyc reefer]

Question when does Alk drop with the lights on or off and will dosing the Alk solution during the day will it raise my Alk when it drops?

Thanks

 

[Mooka151]

Alkalinity is not effected by day / night lighting schedules, PH is what swings. PH will rise when lights are on because photosynthetic plants / algae consume co2 and produce oxygen increasing PH. At night there isnt any lighting to aid in photosynthesis so oxygen levels drop and thus decreases PH. That said dosing alkalinity to proper levels can give you a bump in your PH levels. If alkalinity is already at proper levels, a refugium on a reverse lighting schedule will help to mitigate the nightly swings.

 

[nyc reefer]

PH swings

Thanks for the clarification now I understand. I thought it was Alkalinity that was affected. I do run a refugium in reverse light cycle but my PH does drop at night. Will dosing my Alk additive at night instead of day help or makes no difference?

Thanks

 

[brooklynreefers]

if you dose alk it is suppose to help buffer PH. although it depends on which alk you dose.

Read this it may help clear things up

https://www.reef2reef.com/threads/sodium-bicarbonate-vs-sodium-carbonat-soda-ash.292690/