Am I losing borax potency.


Jun 11, 2013
Sun Valley, California
A few years ago I abandoned my swg system and went to manual chlorine application in addition to adding borax. I was elated with the results with Borax. Sparkling water and soft on the eyes. It appeared to reduce algae growth by 80%. That improvement seems to be wearing off. Although theoretically, like in swg systems, the borax and salt will not leave the pool, the question is, will it lose potency and how do I measure it and maintain it.


TFP Expert
LifeTime Supporter
Jun 12, 2009
NW Ohio
Chlorine reduces algae growth by 100%. Borax isn't supposed to be used in the fashion you appear to be using it. Are you following the FC/CYA Chart?

Sounds to me you've been playing a game of chicken and this time the algae isn't swerving.
  • Like
Reactions: HermanTX