Hydro Farms: 

The maximum number of asteroids in a sector is 14, and the maximum number of hydro per asteroid is 1500.
Build up to this using genesis (prefered genesis level is 2, as it gives 2 100 hydro asteroids) and enrich. Once you have the maximum, do the following.
Calculate how much hydro you can mine so that enrich refreshes it back to full. If you need help with that let me know (Nyx).
Have two times the number of hydro farm sectors as you have miners. If you have 3 miners, you should have 6 hydro farm sectors.
The reasoning for this is that enrich has a 12 hour cooldown on you miner, but a 24 hour cooldown in the sector. This allows you to mine your farm every time Enrich is ready again on your miners.
This is the calculated amount you can mine per enrich lvl while still being able to enrich to full:
(Enrich lvl) - (Amount mined) - (Amount left on each asteroid)
lvl1: 5% - 1000 - 1428.6
lvl 2: 8% - 1555 - 1389
lvl 3: 12% - 2250 - 1339.3
lvl 4: 14% - 2578 - 1315.9
lvl 5: 16% - 2896 - 1293.2
lvl 6: 18% - 3203 - 1271.3
lvl 7: 19% - 3352 - 1260.6
lvl 8: 20% - 3500 - 1250
lvl 9: 21% - 3644 - 1239.8
lvl 10: 22% - 3786 - 1229.6

Here is a tool that will help you calculate how manny enriches you need to get to maximus roid hydro
https://www.desmos.com/calculator/p3kaemvioa