Most up-to-date version (includes integrated snow making and infinite mercury storage): https://imgur.com/a/WDjahrJ
Visual Mods only!
This ranch can support 12 groomed seals feeding on 6 bonbon trees lit by only 3 mercury lights, or 8 ungroomed seals and you can tap two trees for nectar. There's 100% sweeper coverage, but I could not figure out a way to get the sweeper for tallow and egg shells inside of the ranch. If someone can figure it out let me know! 29 30 out of the 30 possible branches are present and at a full 100% nectar production efficiency (See update at bottom).
The difficulty in designing this was really maintaining sweeper coverage and allowing spigot seals access to feed on all of the trees, while making the room only 96 tiles.
The excess seals are scalded to death using the heat of the cooling loop steam room. A blob of high-SHC, low-TC liquid (naphtha) sits under the egg chute, which both keeps the heat exchanger in a vacuum and allows us to scald the seals without heating up the cold room too much. The low TC also means the auto-sweeper has plenty of time to pick up the dropped tallow before it turns into crude oil.
The liquid tepidizer is just there to warm up the coolant a bit while the steam room gets up to temp. If you find you still need it after everything has otherwise reached equilibrium, you can move it into the ethanol at the bottom once you have the required 400kg/tile of liquid required to make the tepidizer work. Just make sure you set the hydro sensor down there to keep at least 400kg on the bottom. If you're making snow to feed the trees, the ice makers will likely provide plenty of heat to keep an AT active enough to keep that blob up to temp.
The little heat exchanger that keeps the naphtha hot can be added to any steam room you already have nearby, you don't have to build it custom for this ranch. Get the heat from whatever source is handy 🙂.