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Removing GHA from zoa frag plugs

Hallowhead

Hallowhead

NJRC Member
Howdy,

I am trying to figure out a way to best remove GHA from frag plugs. I try to scrub with a toothbrush but have to go super gently and don't remove much.

Can I do a 60/40 Hydrogen Peroxide dip to kill algae?
 
diana a

diana a

Staff member
NJRC Member
Moderator
Are you sure it’s GHA? I have a frag that I bought from a member. Had it for 6 months and kept cleaning it with tweezers and tried peroxide. It kept coming back. I left it alone for two weeks and the algae got longer and then I found out that it wasn’t GHA but bryopsis. Used fluconazole, it was gone in two days and hasn’t returned
 
MadReefer

MadReefer

Vice President
Staff member
NJRC Member
Moderator
I did straight 3% peroxide in the GHA. Don't get get in the coral.
It will fizz then lightly brush and rinse.
 
Hallowhead

Hallowhead

NJRC Member
diana a said:
If you try the peroxide, it’s two part saltwater to one part peroxide. Dip for 2-3 minutes
Click to expand...
I'm gonna use this as I've used 3% hydrogen for 5 mins before and killed a zoa

You fully submerge right ?

It's not bryopsis I've battled that before and it's just simple gha
 
Sponge

Sponge

I have found peroxide to be very effective at extremely low doses it will kill the algae with daily dips. Just takes a week. I have done as little as a few drops of 3% in a gallon of tank water for five minutes. You will see no change for a day or two. But the algae will Die. And the zoa will be fine. Less takes longer but will work. And puts way less stress on the coral. It may show normal signs of being not happy but should be fine. You can even skip days if you feel the coral can’t take it. (But it can). Will take longer but it’s no race.
 
DangerDave

DangerDave

NJRC Member
I use h202 a lot in my reef. I dose constantly with an oxydator (W size). I also apply directly to any algae that grows. Once I get a spot that gets a little growth, the cuc doesn’t touch it. I turn off the circulation pump, and use a pipette to apply direct. Wait a few minutes, and turn the pumps back on. Algae dies and turns white, and the hermits get at it right away.
 
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