We switched from heat lamps to the small Premier 1 brooder plates. They work great. They will pay for themselves in electricity bill savings. We didnt get the clear dome covers
Sally Sunshine has a ton of info about candling.
Get this from WalMart
Shoot about 20 holes in it with a BB gun.
When your first batch of eggs are ready for lockdown put a little container with soaked paper towels inside with the eggs. It will raise the humidity enough.
Put your 2nd batch...
Bamadude and I use the gqf hova 1588 here in southeast Alabama. We do not put a drop of water in until day 19. Totally dry until then. We have awesome hatches even with shipped eggs. We will soon pass egg number 1000 hatched from this bator. We have never ever even touched the temp adjust...