I only use a toothpick to clean the gunk out of their teeth :rolleye1:
Thet temperature is perfect. If they get up into the 80s they start to croak faster. They do reproduce all the time but I still need to buy them. My local NY tank is fed mostly worms and I fed them to some of my corals.
If I wanted to keep a larger container I could keep more but I can buy them a few blocks from my house so I don't bother.
I have these things with variuos size acrylic tubes on them. I could not keep a tank without them. I feed baby brine with them, pick up and feed the worms, clean detritus, target feed everything, put water in the hydrometer with it, I use them every day a few times a day.
I buy the bulbs by the case and just bend an acrylic tube and stick it in there. A year or two ago I sold a case here for what they cost me.