Bryopsis killer

tent boy

New member
Will vinegar kill bryopsis? When I do a water change the rock that has most of the bryopsis on it, becomes exposed to the air. The rock cannot be removed as it is attached to an epoxied stack. This stack is almost 36" tall. Anyways, is there some thing I can pour on this when it is exposed. There is nothing else growing on this rock. Hot water? The algae does not pull off very well with tweezers. Yes I know this is not the long term fix. I'm doing the wet skimming and the LaCl, the minimum feeding and the new RO filters as my long term solution.
 
Kent Marine Tech M poured directly on it might get you where you want to be in the short term. Long term there are other issues to address.
 
I'd dab/dribbl( with a dropper) some 3% hydrogen peroxide(H2O2) on it if the rock is out of the water anyway and let it soak for 2 to 3 minutes. It works wonders on turf algae and hair algae.I've tried it last week on a rock top covered with red brush algae and as a 50/50 dip for frags with algae on the plugs for green and red trugf algaes. Not sure about the cell structure of bryopsis . Don't expect it to disappear before your eyes it takes a day or two after you resubmerge it . Don't use too much at one time as it will be flushing into your tank when you refill it. It's not harmful in small amounts.

Alternatively some kalk paste can kill it, but again not too much at one time.

Viinegar is an acid,it will likely stress the bryopsis but the organics vinegar provides will likely feed it later.Oxidizing it is more effective.

It may come back if your rocks are leaching PO4 or if the tank has high nutrients . I suspect the oxidant can strengthen the bond of some of the loosely bound HPO4 or H2PO4 which may otherwise leach readily off rocks though. Some algaes , perhaps bryopsis can also gather organic phosahate which makes them extra tough to errdicate. It also is not on anybody's menu.
 
The hydrogen peroxide worked great. Killed a huge cluster of bryopsis. Working hard at removing the nutrients that allowed it to grow. Bought a few creatures that G said should help. I am holding out on the Kent magnesiun until I see if these other methods fail.
 
Just getting over a Bryopsis outbreak. Used the manual removal/Tech-m process and after a couple weeks i'm almost Bryopsis free. FWIW i have both lps and sps and both were not affected by the rise in mag level.
 
Tech M maganesium over 1600ppm has reportedly worked for some; not for others. It relies on some unknown impurity. If the mystery impurity(metal, chelating aget,????) kills the algae, at some concentration it will harm other life, imo. Organisms have variable responses to metal toxicity and other poisons.
For in tank bryopsis irradication, dropping the PO4 below .03 via a remover like gfo ,and or lanthanum chloride will cause bryopsis or other green algae to wane as they are limited by inorganic phosphate below that level. Keeping PO4 low for a period of time can also exhaust rock that is leaching loosely bound PO4 but this can take weeks to months of maintaining low PO4 water around the rock.

When the rock is out,of the tank curing it and dosing lanthanum chloride to the during water for leaching rock works safely.
A 2 to 3 minute H2O2 treatment is a nice alternative to eradicate alage on unsubmerged rock surfaces . It adds no impruties just some extra O. It should not be dosed directly to the tank as a lot of it can be harmful just like excessive ozone(O3) can.
 
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