Last couple of years I have been SLAMing with 9.6% hypochlorite and had no issues.
Last year no matter how much I tried I could not get the pool to hold chlorine and was using 3-5 times more dichlor than a usual year. I had intended this year to drain and restart but in the end decided to give it a last go.
The pool for reference is approx 11k gallons or 42k litres.
I hit the pool with 20litres of hypo at season start and managed to hold it up for approx 24 hours by adding another 10litres (total) at intervals during that 24 hours (i.e. I struggled to hold a shock level of chlor for a day)
For a few weeks the pool consumed chlorine at a normal rate, then as before started to use 3-5 times more.
Recently I have hit it with a fresh shock, this time with a kilo of trichlor. Three days on and it is still holding shock levels of chlorine.
I am well aware that hypo is unstablised, trichlor is stabilsed etc.. Bit why the heck would one burn off so fast and the other last so long ?
for reference the pool has a base CYA of approx 30.
Last year no matter how much I tried I could not get the pool to hold chlorine and was using 3-5 times more dichlor than a usual year. I had intended this year to drain and restart but in the end decided to give it a last go.
The pool for reference is approx 11k gallons or 42k litres.
I hit the pool with 20litres of hypo at season start and managed to hold it up for approx 24 hours by adding another 10litres (total) at intervals during that 24 hours (i.e. I struggled to hold a shock level of chlor for a day)
For a few weeks the pool consumed chlorine at a normal rate, then as before started to use 3-5 times more.
Recently I have hit it with a fresh shock, this time with a kilo of trichlor. Three days on and it is still holding shock levels of chlorine.
I am well aware that hypo is unstablised, trichlor is stabilsed etc.. Bit why the heck would one burn off so fast and the other last so long ?
for reference the pool has a base CYA of approx 30.