My new pool got an acid bath to expose the aggregate quartz (Pool was filled just over 1 week ago). I was able to neutralize the acid using a combination of soda ash and baking soda. Unfortunately I overshot the TA by a little bit but not by much. My current numbers are:
The acid bath was completed and brought back to neutral 3 days ago. It took some time to clear up the water from all the plaster dust that came off during the acid bath. I cleaned my pool filter which was very dirty. Now, I had not added chlorine to the water as the CH was high after the acid bath and I wanted the TA/PH adjusted a little better.
Last night I had added my first dose of 4oz of dichlor at around midnight. When I woke up this morning the water had a greenish tint to it (but very clear). I have 0 CYA in the pool and so this morning when I checked my FC it was basically 1 and so I added another 4 oz of dichlor. After waiting about an hour and checking the water it is FC: 3 but CYA still doesn't register. My thought was that I would still continue adding the dichlor in 4oz doses as necessary to maintain the PH and the CYA would eventually begin to register.
From reading other posts it seems likely that there is metal in the water (iron/copper). The other reason I highly suspect this is related to the dichlor is that the dichlor was added to the pool and was not being circulated into the spa. The spa is still clear and has no greenish tint. A sequestrant was added before the acid bath was started.
Will this green tint go away on its own? Should I cease using the dichlor and go get a chlorine stabilizer and use bleach instead? Add more sequestrant? Go get the water tested?