High CYA, drain 1/3 refill?

[fatstogie]

I diluted 2/3rd's remeasured and it reads aproximately 38, so the pool must be around 114. Looks like I need to drain at almost 1/2?

[PoolDoc]

If your target CYA is 60, yes. If it were me, I'd just switch to bleach or cal hypo. But, I don't know what's available to you inexpensively, and I don't know what your calcium levels or equipment set up is. It's hard to use cal hypo long term, if you don't have a sand filter.