That really depends on what you’re trying to accomplish with your tank. In my 9g, it’s brimming with shrimps and I do feed at least twice a week and I’m top of water changes. In my nano cull 3g, I rarely feed while leaving it full of green algae on the two walls. It also gets the most light. In my 20g, it’s plant-centric and my shrimp population is low with only occasional feeding. I also do big water changes to keep nitrates close to 0 for my red plants. Not great for shrimp baby mortality.
bearfootmedic 
That really depends on what you’re trying to accomplish with your tank. In my 9g, it’s brimming with shrimps and I do feed at least twice a week and I’m top of water changes. In my nano cull 3g, I rarely feed while leaving it full of green algae on the two walls. It also gets the most light. In my 20g, it’s plant-centric and my shrimp population is low with only occasional feeding. I also do big water changes to keep nitrates close to 0 for my red plants. Not great for shrimp baby mortality.
I crank up the light in my dirted/planted 20gal. Creates extra algae growth on top of biofilm, the occasional dead snail, and decaying plants.
Every once in a while I throw in a pinch of pellets to promote crustacean health….forget what its called.