How to Kill GHA

[JMorris271]

This may help. I have done it before .
I don't now how it affects corals but LR is no problem so I have heard. (Disclaimer)

http://www.koiphen.com/forums/showt...fish-ponds&highlight=killing+Green+hair+algea

 

[SPotter]

I would be very hesistant to put this in a reef tank. The thread was started in 2007 and most recent post was in 2009. I saw a response in there where someone said it raised the ph in their pond to 9-10. Might be ok for a pond but would not consider this for a reef tank.

 

[JMorris271]

I ay be hesitant as well but I am speaking of a fishless tank with water changes after treatment. I honestly don't know if it would work in an aquarium or not but if I were having this problem and my fish were out I will try it and see before I dismantled the tank.
Some people get carried away when they dose. You never know what happened when something goes haywire.
Someday when I get some cheap corals, I will try this and see for myself what happens. I
I am only saying it has worked for me and many others several times in a pond.

 

[Sk8r]

A reliable treatment that DOES work safely in a reef is a GFO reactor---1 jar Phosban per 50 gallons, [use the large reactor for a 100 gallon tank)---change the medium once a month, and within about 3 months your rocks will be algae-free.

 

[Dan_P]

The material is a complex of sodium carbonate and hydrogen peroxide. Adding it to saltwater will likely raise the pH too much.

Why would you use this instead of hydrogen peroxide? And would you risk adding an oxidizer to your aquarium?

 

[mluntz]

A reliable treatment that DOES work safely in a reef is a GFO reactor---1 jar Phosban per 50 gallons, [use the large reactor for a 100 gallon tank)---change the medium once a month, and within about 3 months your rocks will be algae-free.

Are you sure you mean 1 jar per 50 gallons? One jar lasts me 2 or 3 changes usually.