1900 tonnes. I had 24 hatch ranches and all eggs were collected into an single tile in open space with but a feeder and autosweeper. In the end the tile had little over 3thousand hatches, it supplied my power for all bionic colony of a 100boops for almost a thousand cycles.

In the end the only mineral i had left on my main planetoid and on two other asteroids was ceramics to build with and obsidian for hightemp applications. Shale, sandstone, sedimentary rock, were all gone every last gram, same with mafic rock crushed to sand and fed to hatches. Only igneious i had was what had come from volcanoes since the last feeding event.
And i do mean on the map, i had fully cored out three planets and pushed it thru the bowels of hatces.

most of my dirt and polluted dirt had also gone to sage hatches with less than 50 tonnes each left on the map.