Using A Pool Water Test Kit

How to use a pool water test kit.

Several brands of chlorine and PH test kits are sold by pool dealers. Buy one that is easy to read accurately. Fill the test tube to the line with pool water obtained at least 18 inches below the surface water in your pool and make sure it is obtained away from the pump inlets. Do not test water immediately after adding chemicals to the pool; let the pump run for at least six hours before testing. Buy fresh test reagents at the start of each swimming season and discard phenol red reagent if it develops an orange cast. Discard pool water samples after testing. Do not allow children near the chemical test kit while testing the water in your pool. Never pour the tested water back in your pool.

Always make sure you rinse the test tube before using it again. Some of the residue from the old test can be still in there, thus giving you a faulty reading. Add specified amount of reagents. Hold bottle vertically and squeeze slowly to obtain the right amount of drops needed.

Cap the tube and shake. Do not cover the tube with your finger, skin oils will alter the readings. Use the cap for the tube that came with the kit. Match test colors to shade on the tube to determine PH or chlorine level. If you find the readings are too dark or too light, here is the way to correct the problem.



If the water is stinging your eyes and the pool liner is stained or aluminum pool parts are starting to corrode, this is the action to take:

Test PH level. If low, mix soda ash granules into pool with pump running. Do not use high PH laundry bleach or inorganic chlorine granules in the pool. Use only stabilized, organic chlorine products that have been purchased at your local pool center or home improvement center.

If scale is forming on heater coils, pipes, pool parts, pool liner bleached, you have a heavy chlorine demand and cloudy water, and the rapid filter is clogging, check the PH level. If high, add one pint of muriatic acid or sodium bisulfate to a bucket of water; add to pool with pump running; allow to circulate overnight. Test PH next day. Add more muriatic acid or sodium bisulfate if needed, but no more than one pint per day.

If the problems is just cloudy water, this is caused by dirt and other non-filterable wastes, add oxidizing agent or 5-10 times normal daily chlorine dose to bucket of water. Pour into deep end of pool, run pump for 12 hours and make sure the family stays out of the pool. This cloudiness is also caused by children urinating in the pool. If using chlorine tablets, buy a chlorine tablet holder that floats on the top of your pool water. Never throw chlorine tablets in the bottom of your pool. If you have a vinyl liner, this could melt the liner. If your pool is concrete and painted inside, throwing tablets in the pool will cause your pool paint to fade and possibly remove the cement and paint finish. Remember, these chlorine tablets are powerful.

For red-brown iron oxide build-up, follow procedure above, but run pump for 48 hours, then vacuum up particles that have settled on the bottom of the pool. If none of the above help and you still can't get the test of the pool water accurately, bring your pool water to a professional.

© High Speed Ventures 2011