If you own a rental property, insurance on the rental is fully deductible as a business expense. Taking out liability insurance along with property insurance is a good idea, as it protects your assets if a tenant slips on a rickety step or says you evicted her illegally. You deduct rental expenses from rental income.
I added some pH minus, I think it's called muriatic acid, to lower my swimming pool pH level. I was wondering how long should I wait before I let my family go swimming after adding a pH minus or pool acid. Good question Larry. I would suggest a good 2 hour wait before you go swimming again.
To increase calcium hardness you'll need calcium chloride. Calcium Hardness. You can swim 2 hours after adding, but if you can, allow for one full turn-over of the water. A turn-over is a full and complete filtration of all of the swimming pool water, normally about 10 hours.