What do you feed your shrimp to encourage breeding?

Several of my shrimp have molted since I got them and I want to get a breeding colony going, what do you guys feed them to really get them going? (I have googled it, but I want to see what works for people who actually have shrimp instead of google advertisers)

Temp is in the 78-86 range regularly, I’ve offered them algae wafers but they seem more interested in just grazing on diatoms and plant detritus