And what if I am away on my holidays? Anyone who does not have an automatic swimming pool care device must remember to take care of the pool water if the holiday is longer than 8 days. Ideally, the pool should be covered. Adjust the pH first, then put some Chlorilong or Multilong tablets into the dosage float. The pool circulating device should be left turned on (for half the usual time). If you adopt the procedure, the pool water will persist in good condition for as long as approx. 3 weeks.