With my current setup, I like to germinate in paper towel and then place the seedlings into Rapid Rooters as you can see above.
I place the RR in a humidity dome, Super Sprouter Tray.
No feed is added but I spray the humidity dome with plain RO water, Ph'd at 6.3 from the Stealth RO 300 system.
I popped 2 Sour Diesel by Blimburn Seeds, 2 Og Kush by Humboldt Seeds and 1 Blueberry by Canuk Seeds
with a 100% success rate, took some time as you will see.
Temperature Lights on 25-27C, Off: 18-20 C
Humidity: 45%-55% in tent unsure about dome