Hello. My pH quite recently has dipped to the lowest it's ever been. Generally my pH dips to 7.8 during the night and then peaks at 8-8.01. I have every window open in my house to get some oxygen saturation which is what I normally do if there is ever a small dip but I can't figure this out. Included are my pH readings and my weekly tests. I also do 10-15% water changes weekly.
Anyone have any idea why this drop is happening? I originally assumed it was my dKH was significantly low, but I tested and it's within my normal range. Also the nitrate spike was me killing bryopsis in my tank. Did a 30% water change and readded red ogo to my refugium which is sucking up all my nitrates
![IMG_2371.png IMG_2371.png](https://www.reef2reef.com/data/attachments/3473/3473548-4106238fb6659c7db17e8008545bc9e6.jpg)
Anyone have any idea why this drop is happening? I originally assumed it was my dKH was significantly low, but I tested and it's within my normal range. Also the nitrate spike was me killing bryopsis in my tank. Did a 30% water change and readded red ogo to my refugium which is sucking up all my nitrates
![image.jpg image.jpg](https://www.reef2reef.com/data/attachments/3473/3473547-776a05b92556efb40168a2ab0b879177.jpg)
![IMG_2371.png IMG_2371.png](https://www.reef2reef.com/data/attachments/3473/3473548-4106238fb6659c7db17e8008545bc9e6.jpg)