I'm sure my question has been answered already somewhere in this 98 page discussion but after reading 10+ pages of post after post, I'm a little overloaded with info.
I don't have any incubating experience whatsoever and have never incubated anything ever, so thanks for any feedback. I just bought the Brinsea Octagon 20 eco last week and have finally stabilize the temperature to approx. 99.5F. This evening I'm going to put in 20 eggs. I've been doing a lot of reading and researching, seems the more I know the more questions I have.

Again, could just be info. overload at this point.
My question:
Regarding the water, the manual says at the beginning to fill one of the channels 3/4 full. (mentioned very briefly).
Do I continue to maintain this channel 3/4 full the entire 18 days or is this a "one-time" fill only? Another words, if I see that the water in the channel has dried up or lowered on day 15th, do I refill it up to the 3/4 mark again?
I understand that the last 2-3 days after day 18, I need to fill both channels with water to maintain humidity for the chicks. (open for feedback on this too).
Thanks again and great feedback on this forum!
Phoenix~