First post here and first time pool owner. I purchased a home with an existing 24k gallon IG plaster pool in south Texas. This pool is L shaped and has a small spa located on the inside of the L as you can see in this photo. The plumbing is connected for both. My math says the pool and spa make about 24.8k gallons combined.
We emptied the pool completely and gave it an acid bath last week. I've since refilled and slowly getting my numbers right. Here is what I have right now.
FC 8 - Will be keeping around 6.
CH 150 - Will be receiving 25LB of Calcium Plus from Robelle tomorrow.
CYA 35 - Still adding dry cya in a sock. Goal is 50-60.
I've noticed my pH continues to rise from 7.5 to 8.0 daily. I bring it back down to 7.5 with 24oz of 31.45% MA and it jumps right back up the next day. I have a theory that my spa returns are causing aeration. They have a ton of bubbles coming from them.
The returns for the pool don't have this problem. Any ideas? The spa has 3 returns and the pool has 2. I have not yet found a way to turn them off separately. Where could the air be coming from? I have a pipe coming out of the ground the seems to be sucking some air.
Is this the source? I covered with metal tape to test and still had bubbles. Any ideas? Thanks in advance.