Quote Originally Posted by waste
when using the sequestering agent, place a chlorinating tab in the skimmer, you need the cya anyway, it'll help the metal come out of solution in the filter where it belongs.
Don't do this if you have a cartridge filter. The low pH from the trichlor could cause damage to the cartridge. If you have a sand or DE filter it can help the metals precipitate out on the sand or the DE but run the pump continuously while you do this.