Over the last 2 months, my Royal Farlowellas have laid eggs 3 times. The first time, I had no clue what they were and scraped them off the glass because I thought they were pond snail eggs. The second time, they hatched while I was in Florida on vacation, but in doing maintenance today I saw three of the little buggers and am hoping that there are a lot more because there were about 40 eggs in that clutch. They just laid their 3rd set of eggs yesterday or today and I am going to try to be more on top of these and be ready for when they hatch so that I can transfer them to a grow out tank or my plant refugium that is only inhabited by snails with a ton of algae on the glass.
I have 2 females and a male in a 75 gallon tank, and I can always tell when the females are about to lay eggs. They get some pretty big bellies.