I'd use algaefix if you can netr out the inverts and shrimp, it will kill the shrimp.
Copper will harm the plants as well, so algaefix has had the best experience as far as fish and plants.
Like over doing Excel or H2O2, people have kiloled their fish.
Follow the label and watch the fish close.
Do the old water change before/after and clean things up really good before using it. It'll take about 4-5 days for it to die off.
I may use it to selectively kill the low grade fire shrimp in my 120 Gal.
I tried it a couple of tanks recently, but I knew the root cause for the issue, no algae killers cures the root cause.
Most greens are CO2 and /or current in some way or the other.
I was able to go back and confirm this in 3 tanks later.
I have never treated the 120 Gal which got the same algae, but I was able to get rid of it with good trimming and CO2 adjustment alone. My 180 gal never got it even if I placed infested plants in the tank, light, sediment, fish load, filtration, are all the same including dosing of ferts, water changes etc.
I placed dozens of plants in the 180 Gal over a couple of months, never once did any algae make it take a hold. I also tried cleaning up moss with algaefix and it worked really well in a small bucket with a sponge filter outside on the porch out of direct sunlight.
My CO2 ran out and I got some in my 70 Gal tank(my hands are often out i natural systems with lots of algae, and tank to tank transfers occur often enough, but do not take hold unless something is wrong............)
So I caught the shrimp and then tried it. Works just like the bottle label stated and no harm to any fish or plants.
Also seemed to kill Caldphora I found on some wood in a stream. Not sure about BBA, likely kills GSA, mostly greens, GDA also perhaps.These tend to be more pesky algae, so the selectivity is excellent.