Quick pH question

[drew2005]

Is it normal to have a pH of 8.2 during the day and 8.4 at night? Is it safe for my fish?

 

[hermitkrab]

Eveyone should be fine. pH stays more stable when there is always a light one i.e. fuge like on during the night and main tank like on during the day.

 

[reefnut]

Sounds fine to me. What are you using to test the PH??

 

[drew2005]

Originally Posted by ReefNut
Sounds fine to me. What are you using to test the PH??
Saltwater master test kit. Its been stable at 8.2-8.4 for months.

 

[hermitkrab]

When you can switch to Salifert. They are the most accurate test kits I've come across. But if these test kits work for you then there is no real reason to switch.

 

[mbrands]

I was reading an aricle online about refugiums. It suggested setting the refugium light on a timer opposite the tank so that a light is always on. The article said that when the light is on the CO2 in your tank lowers, causing the pH to rise. For an accurate pH reading you should do when your lights first turn on.