You can take the shrimp or fish out temporaily also.
Bomb the tank, then return them.
Catching them: drain 80% of the water, they cannot run if they don't
have no water.
H2O2 kills some plants, and did not do any harm to 3 species of green
algae.
So.............it's no cure all, that's for certain.

Neither is copper.....
No algicide is.

Simple Staghorm appears due to excess fish waste and NH4, substrate
disturbances.

This doesn't explani why it has shown up here and grown very well
in fishless substrate free tanks.

Substrate free tanks with plants and lots of light?
Planted substrate free tanks? I suppose there are such things, not many
mind you

But more to the pouint, yes it does explain things, the tank have far
less bacteria, and this has less buffering of NH4.
asnything that reduces NH4 is a good thing, less light and more plants
and less fish etc.

NH4 does not take long to induce algae. Once there, the algae will then
persist.
The NH4 presence does not take that long and day or two of poor plant
health, or a large influx of NH4, then it's removed by plants, filter
bacteria etc and you will never see it or measure it till after the
algae has bloomed.

But.....you can dose NH4 and urea and see this occur ansd work backward
and not have to chase this through fish loads and observations alone.

Fish kills occur in shallow lakes often when wind whips up the
sediments and reduces the O2 to nil. We have almost never measured this
while it's happening, we do see the aftermath. The same is true for the
algae.
We know this occurs in lakes because a few lakes had DO monitors on
them and the O2 level where measured during this time peroid. But these
are far and few in between.

You might consider looking back in time to see what was done when it
started.
Data is critical for that reason. Some Reef folks are very good with
this and use good test kits as well.
I've been able to look at their data and go here's where this bloom
occured? I am right virtually everytime.
I know this because I work backwards and try inducing it and then kill
it and try again. After a few times, it quickly becomes clear. Someone
else tries, and they get similar results. High fish loads or urea also
seem to help more than NH4 dosing for this alga.
Regards,
Tom Barr









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