GHA

[rob s.]

I've heard that hydrogen peroxide is an easy way to eliminate GHA. Can someone give me some direction on how and when to do this? does it effect corals or fish? Thanks

 

[ryewalk84]

I’ve done it in the past. It oxidizes the algae and it turns white and dies off. I Turned off all flow and applied it with a syringe to the base of the algae. Doesn’t get rid of it fully but helps to get what you can’t remove manually. No more than 1ml/10 gallons.

 

[ryewalk84]

it would also plummet my ORP when added.

 

[rob s.]

it would also plummet my ORP when added.

if I knew what you meant i'd do it...?

 

[rob s.]

What is OPR?

 

[ryewalk84]

It stands for oxidation reduction potential.

http://reefkeeping.com/issues/2003-12/rhf/feature/index.htm