Ok this is a bit of a disaster.
First my Intex pump/filter chlorinator died and is still sitting in the pump repair place a long way from here, so that is out of action and may have to be replaced once they can work out what is wrong with it.
I went away for a week and when I came back I had lost half my water due to a stupid mistake with a hose, which I wont embarrass myself by explaining further.
I had to add about 25,000 litres of clean rainwater, which I had stored.
So my pump/chlorinator is out of action, my pool water is no longer balanced and to top it all I have to leave the pool unattended for about 6 weeks.
It is coming to the end of summer here. So I only filled the pool up to just over 3/4 (no frosts here ever), cleaned out all the leaves, covered with the solar cover and then put on the
winter cover and roped it down.
So my stats are:
CYA 20 (usually about 40 or 50)
FC 1.5 ( have been using liquid chlorine this week)
Now I have a fair bit of liquid chlorine and a pack of once a week tabs (890g/kg available chlorine present as Trichlorosocyanuric Acid).
I have bought one of those big blue Waterco floating dispensers which allows you to close of the slats by turning to reduce the amount dissolved.
I may have to go away again for another month after I get back in 6 weeks so may have to use these tabs again.
My question is what level of CYA should I take the pool up to bearing in mind I may be using the tabs for the next 6 months. I need enough so that the tabs last and not
too much that the tabs cause the CYA to go too high so that next summer I have to empty out water (no mains water here only rainwater stored in tanks).
Also what level of FC should I take the pool up to with the liquid chlorine before putting in the tab tomorrow. Should I put in one tab or more than one. Is there a way of getting
a second tab to drop down when the first has dissolved.
I realise this is far from ideal but I have eliminated most of the sunlight from the pool and I do find that when I do so, chlorination in the winter at least is minimal with a CYA of 40.
I dont have anyone round here who I would want to ask to put in tabs for me as I think its a bit of an imposition to ask a neighbour.