Hello, everyone--
We have a 1,000 gallon in-ground spa, lined with tile, about 20-years old with recently upgraded pumps, controls and heater. I had been mainly using 1" trichlor, with a drain-and-refill every one to two years. Having read through much of Pool School over the last week I'm inclined to switch to bleach, with the understanding that I'll have to closely monitor pH which will be driven upward by liquid chlorine.
Although the water clarity is currently good and FC levels are constant, I have had algae blooms in the past that have left some surfaces (mainly the vertical surfaces) with hard-to-remove stains. Super-chlorinating and brushing with either nylon or stainless wire brush heads doesn't touch them. I've had some success with heavy-duty synthetic scrubbing pads, but it's a lot of work. Any suggestions are welcome!
Don
We have a 1,000 gallon in-ground spa, lined with tile, about 20-years old with recently upgraded pumps, controls and heater. I had been mainly using 1" trichlor, with a drain-and-refill every one to two years. Having read through much of Pool School over the last week I'm inclined to switch to bleach, with the understanding that I'll have to closely monitor pH which will be driven upward by liquid chlorine.
Although the water clarity is currently good and FC levels are constant, I have had algae blooms in the past that have left some surfaces (mainly the vertical surfaces) with hard-to-remove stains. Super-chlorinating and brushing with either nylon or stainless wire brush heads doesn't touch them. I've had some success with heavy-duty synthetic scrubbing pads, but it's a lot of work. Any suggestions are welcome!
Don