If you have an adjustable led
light you can do what I do, I leave the light on 1% all day. Lets me see the fish but doesn’t provide much to plants or algae, then I just turn it up to high for the set number of hours you want high intensity lighting. If you’re battling that much algae I would probably cut the high intensity time way back.
What kind of plants do you have? Many common plants really just don’t need that much light.
I kinda doubt your shellies could resist shrimp, almost no fish can. Amanos get pretty large and are good hiders so if you find them available for purchase at a large size and have a ton of thick plants and hiding places than maybe it’s possible?