We have just moved into a new house

The pool was finished a while ago and I have been running the pump nowhere near what I should have been due to basically not being around much

Now we have moved in it still looked amazing running the pump around 6 hours a day

Bought some test strips and 25l of hydrochloric acid expecting the PH to be over 7.8

Bought some test strips and everything is low

Any advice

I have been leaving the salt chlorinator on around 18 hours a day for the last 3 days hoping to get the chlorine to rise

Many thanks for any help

It still looks great but had a bit of algae on the walls which I cleaned a few days ago

Leaving  the pump on all night to see if it helps with the Salt chlorinator running
Seems most i what i read the PH is very high but mine is far too low

With a new pool & salt chlorination it will naturally rise and from then on you will have the opposite and you will need to use hydrocloric acid a couple of times a week to keep to pH down. Personally I prefer reagents rather than strips. You don't know how old the strips are and if they have been in the heat. Get a small reagent kit from Lazada or a pool shop and keep it in a cool place.  

What about digital testers? Any good available?

8 hours ago, Hummin said:

What about digital testers? Any good available?

Only <removed> (Total Dissolved Solids "Salt") & pH pens which can be sourced online. I.e. Lazada.

A full digital system to do a range of test wills set you back 20K +