Did I overreact by shocking my pool?

[Pmachang]

Hi forum

I ran out of reagent for my Taylor test kit to test the FC level and waiting for a refill order to come in the next few days.

Today I noticed that the bottom of the pool had some green algae and once I brushed it, it quickly dissipated into the water.

Not wanting to take any chances, I added some shock to the pool. Was that an overreaction on my part? Since the algae quickly disappeared once I brushed it away and only a very small section, I’m assuming that it wasn’t that bad?

Few days ago, I did test the FC level and it was at 6.8 and CYA at 70. Pool was only used by my son for past 2 days.

Thanks

 

[HermanTX]

Not sure what type of shock you used but suggest go with liquid chlorine or cal-hypo (since you have a vinyl pool) to quickly raise your FC if needed. I would err on the high side of your target FC which for CYA of 70 is 5-10ppm so maybe go to the 8-10 range to rid yourself of any lingering algae.

 

[Pmachang]

I’m using the following product which is 65% calcium hypochlorite. Can you explain why liquid chlorine or cal hypo is better for vinyl pools?

thanks

 

[mknauss]

65% calcium hypochlorite

That is cal hypo.

As long as your CH level is low, and you follow the proper method to add it to your pool, that product will work fine.