How To Shock A Hot Tub With Bleach. How much bleach to shock hot tub. 3 fluid ounces of 6% bleach will raise the free chlorine (fc) level by 4 ppm in 350 gallons.
If your ph is already on the low side, use spaboss ph plus, as it will raise your hot tub's ph. When shocking your hot tub, pay attention to a few things. Remove the lid of your hot tub and turn the taps on to let the water flow in.
Here is an easy step by step:
There are problems with this, not least the fact that the bleach could well totally throw your ph levels out. The shock treatment of a hot tub is for curative or corrective purposes. Calm water, keep jets on low and blower off; Then there are questions about using swimming pool liquid chlorine in a hot tub since it's often cheaper.