Phil,
The new firmware is running better numbers most of the time. The sweep is faster and a little more aggressive. The batteries are getting to float sooner in the day allowing more available heat if needed, but right now, it is not needed. We are only running one heater and it is keeping the temps around 83F.
The LED light was from marineland. I got the advanced version. It is programable for time on and off. Also, it has moonlight simulation using blue LEDs. Ours is powered off the solar power side.
The CB explanation was great. I understood it all, thanks for that!!
So currently, we are in a very good place. The water is right, the solar power is right and the heaters are right. The new CBs work like a champ and we are feeding them like the pigs they are. Now if I can get them to spawn, and we can grow out a good number, this will be our best attempt to over winter our Tilapia.