So I don't remember what excuse I gave myself for not following the experts' advice to do a water exchange in response to my post last August. Maybe I was thinking I would wait until the winter, then got distracted when my wife had a knee replacement, or the wet winter led me to believe I could get by without it, I don't know. Nevertheless, here I am in possibly worse shape with my tail tucked between my legs asking for help yet again. Due to a leak I had to order a replacement part and couldn't run my filter until the parts arrived, and the temperature rose above 100 degrees in the meantime, so here I am wondering whether to SLAM my pool to get rid of the algae I now have and then do a water exchange, or do the exchange with algae present. I'm thinking the latter for the following reasons. According to Pool Math, I need to replace 77% of my water. I have worked out a schedule of how much to drain per hour based on the flow rate of the pump I plan to rent from Home Depot and the fill rate from my tap according to hourly temperature forecasts so I don't expose the pebble tec to air temperature above 85 degrees, and expect the process to take about 26 hours. Based on other posts I've read about water exchanges, my filter won't be running so if I wait until the water exchange is done, I assume it's not worth worrying about any increase in algae since I will SLAM the pool after. The temperature of my pool in the deep end is 82 degrees and my fill water is 78 degrees. Although not much difference, the cooler water theoretically will sink to the bottom where the pump would be, but may also reach the same temperature as the pool water by that time. I don't know if that makes a difference. I plan to start with my attached spa as I can drain that into the pool and refill it separately. Here are my readings:
Any and all advice is much appreciated and I pinky swear to give strict heed and diligence this time.
Attribute | Pool | Fill (tap) water |
Temp | 82 degrees | 78 degrees |
pH | 7.2 (recently added acid to lower pH and TA) | 7.6 |
Salt | 4600 | 600 |
CH | 1125 | 250 |
TA | 120 | 170 |
CYA | 70 | 0 |
FC | 1.5 | 0.5 |
CC | 0 | 0.5 |
TC | 1.5 | 1.0 |
Any and all advice is much appreciated and I pinky swear to give strict heed and diligence this time.