If there are leftover after maybe 6 hours you’re probably over feeding if you space out the feedings to once every three days you’ll see that they swarm the food before the snails and worms can get it and leave minimal left overs if you don’t want to starve your bigger Ramshorns, but everything else can feed off detritus, shrimp seem to prefer to eat mostly biofilm and detritus but do like prepared foods every now and then.
smellycatt 
If there are leftover after maybe 6 hours you’re probably over feeding if you space out the feedings to once every three days you’ll see that they swarm the food before the snails and worms can get it and leave minimal left overs if you don’t want to starve your bigger Ramshorns, but everything else can feed off detritus, shrimp seem to prefer to eat mostly biofilm and detritus but do like prepared foods every now and then.
One time a week.