YShahar
Enthusiastic duct-tape engineer
I can't believe I've removed 75% of the Salvinia thinking it was a weed, I'm going to slow down and research more!
Well, the good news is that it will grow back fairly quickly, especially as you're heading into summer Down Under. And in any case, the stuff you took out makes excellent compost, so not a total waste. But yes, Rabbi Google is your friend here: take photos and upload via Google Lens to see what sort of plants and other pond denizens you're dealing with. Then you can make informed decisions on what to keep.
Cheers!