An economical liquid winterising algaecide for cold weather use to resist the onset of green algae. Use with a sanitizer.

Active ingredient present as alkyl benzyl ammonium chloride.

Used as a preventative algae treatment in winter, this is an economical algaecide to be used in conjunction with a winter program incorporating the use of a sanitizer.
poolgard Wintergard 50 is not as effective in warmer weather.

USAGE INSTRUCTIONS :
To prevent the build up of algae, add 500ml of poolgard W50 per 45000L and at the same time shock dose with 1kg poolgard HTC chlorine per 45000L. Filter for 12 hours. Repeat every 4 weeks over winter.