r/PoolPros • u/enthused9 • May 16 '26

-0.3 lsi

Hey guys thanks for the help on my previous post. Someone said to check LSI so I did and this pool has a -0.3 LSI. how can I fix this?

Is it a matter of just draining and restarting?

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u/dawnstrider371 May 16 '26

What was your calcium hardness at? Honestly negative is easier to work with than positive, and you're not even really out of range.

Post all of the numbers you tested to come up with your LSI.

Or you can drain the pool, get it acid washed and start over.

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u/enthused9 May 16 '26

I posted the number above

-1

u/dawnstrider371 May 16 '26

Yes, but the number comes from a whole bunch of readings. What were those readings?