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.
Water tests should be completed before adding any Chemicals. On that same note, pool chemicals can take up to a day (sometimes longer depending on the product) to have their full effect seen in a water test. Therefore, it is a good rule of thumb to wait at least 24 hours after adding chemicals to test your water again.