How long for muriatic to take effect?

[waterbear]

I have a spillover spa, 2 waterfall/bubbler deck pots by Fiberstars and deck jets so I have a lot of airation but I find my TA tends to stay constant at around 100-110 ppm. My fill water has a TA of 110 so that might be the reason. I have to add acid about every 3 weeks to bring my pH from about7.8-7.9 down to about 7.2 because of the SWG and my TA is around 100 when the pH is low and around 110 when it is on the high side. The only time I had to add baking soda was after a metal seqestering treatment which lowered my pH and TA signifigantly.

Every pool is different so there are no hard and fast rules. Also I have fiberglass and yours is gunite so your pool surface is going to be more reactive with the water. What happens in my pool might not happen in yours.

Just keep tabs on things and see where your pool goes. Make small adjustments and retest if needed. Don't try to rush and make big changes at once. You will soon find the perfect levels within the recommend ranges for your pool that are fairly stable.

If you calcium levels are not too high you might want to consider raising your TA a bit. This might create less of a change when you have to lower the pH.

For right now I would keep all levels at the range that your builder recommends for the new pebbletec finish until it is cured! If that means monitoring and adjusting the pH, TA, and CH levels then do it. Once the pool is cured things should settle down somewhat.