AAS Posted May 26, 2006 Report Share Posted May 26, 2006 we have lowered our ph and alk - all our numbers "read" good. We have done the Shock and Banish treatment twice and the mustard algae goes away, the water looks great but then 1-2 days later it comes back! Why wont it say away. what can we do? Quote Link to comment Share on other sites More sharing options...
waterbear Posted May 26, 2006 Report Share Posted May 26, 2006 we have lowered our ph and alk - all our numbers "read" good. We have done the Shock and Banish treatment twice and the mustard algae goes away, the water looks great but then 1-2 days later it comes back! Why wont it say away. what can we do? What are your numbers? (FC, TC, pH, ALK, CH, and CYA) specifically what is your CYA level and where do you normally keep the FC at? IF you have high levels of stabillizer in the water then you need to run your FC higher to compensate for the chlorine being 'stabilized' and not leaving enough to actually kill the algae. Quote Link to comment Share on other sites More sharing options...
Brulan1 Posted June 29, 2006 Report Share Posted June 29, 2006 we have lowered our ph and alk - all our numbers "read" good. We have done the Shock and Banish treatment twice and the mustard algae goes away, the water looks great but then 1-2 days later it comes back! Why wont it say away. what can we do? Algae feeds off phosphates. Buy a chemical to reduce or get rid of the phosphates in the pool. super chlorinate and add some yellow out over the area and brush off if it has reappeared, than add phosfree by natural chemistry. Quote Link to comment Share on other sites More sharing options...
waterbear Posted June 30, 2006 Report Share Posted June 30, 2006 Algae feeds off phosphates. Buy a chemical to reduce or get rid of the phosphates in the pool. super chlorinate and add some yellow out over the area and brush off if it has reappeared, than add phosfree by natural chemistry. BOGUS!!!!!!! Phosphates MIGHT be a cause of repeated algae blooms but are ususlly NOT the limiing factor. Algae also feed off of nitrogen compounds and these are far more commen in poosl than phosphates (where do you think chloramines come from?) IF you have no nitrogen compounds in the pool AND have high phosphates then reducing the phosphate might work but this is ususlly NOT the case! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.