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Stains, scale, rust or brown water.

A pool service technician should work the water balance, and a licensed heater technician should handle any exchanger work.

Customers put it like this

  • brown water when the jets start
  • stains on the plaster
  • white crust on the tile
  • heater is leaking or pitted

Stop first if

  • Anyone feels a tingle near the pool or equipment.Get everyone away from the water and keep them out. Call a licensed electrician.
  • An acid wash or strong stain treatment is planned with a heater in the loop.Hold the treatment until a technician isolates the heater. Keep acid and chlorine products apart.
  • Acid and chlorine products were mixed.Leave the area and keep others away. Call emergency services.
01

Ask on the call

6

Homeowner? These are the questions a good technician will ask you. Having the answers ready makes the first visit count.

  1. What color is the stain, and where is it?
  2. Does the discoloration show only at start-up in the morning?
  3. What algaecide, ionizer or metal treatment have you used?
  4. What are your latest pH, alkalinity and hardness numbers?
  5. Do you put tablets in the skimmer?
  6. Is there any drip at the heater?
02

Bring

5
  • Pool water test kit
  • Metals test supplies
  • Ruler for photo scale
  • Flashlight
  • Gloves and eye protection
03

Check on site

6
  1. Test pH, alkalinity, hardness, temperature and dissolved solids.
  2. Test the water for metals, and the fill water where possible.
  3. Look at the heater from outside for drips, and note where chemicals feed.
  4. List pumps that run only part of the time and what their wetted parts are made of.
  5. See whether a bond wire reaches the heater and pump lugs.
  6. Leave exchanger or thermowell replacement to a licensed heater technician.
04

Keep on the record

4
  • Photos of stains with location and scale
  • Water test results including metals
  • Chemical and algaecide history
  • Piping order from pump to feeder

General guidance for a qualified person, not a finding about any home. The person on site decides.