<a href=showthread.php?s=&postid=12653034#post12653034 target=_blank>Originally posted</a> by chucksta1
Anecdotal observations from..... ME!..
I had no hair algae for over ywo years, suddenly, from outa nowhere!!! Bam! Hair algae from another dimension!! I test for phosphates.... 0.000 ppm.. My R.O. tests out at 4 TDS, so I know that the problem CAN'T be the water source, so where the heck is the algae getting the fuel from?? Then I see a post about and and the guy claims that the hair algae will cause the test to read 0.00 ppm on the phosphates because it's already getting bound up in the hair algae... Suddenly, the light comes on and I head to the "bat cave" to check the water BEFORE I put it in the tank.... Wouldn't cha know it!! Phosphates in the make up water!! Donning my cape and rolling an 18 for a spell of enchantment, I head off to surf the net for an answer. Finally I order a D/I unit to add to my RO And a phosphate reactor and media. Now it seems the local municipality, in another desperate attempt for global domination here in the new milennium, had been adding phosphates to the water, as it helps stop the pipes from rusting, so three gallons a day of phosphate laden water had been the fuel source for the hair algae..
I loaded up the phosphate reactor with media and could see the results within three days. The hair algae went from green to brown and started receeding, just like my hairline only way quicker! I tried and tried to figure out how to tell when it was saturated. At least the resin in the D/I unit had the common courtesy to change colour when it was done, but then it dawned on me that when the algae stopped receeding, it meant that the media should be changed!! Whoo Hoo! it's working!!
That's my story and I'm sticking to it! It seems to me that the phosphate media out absorbs the algae and the algae dies. As long as I change the media often enough to match the phosphate leeching back from the rocks...........