Reservoir for soil grow?

I was thinking instead of feeding 16 plants with a watering can, is it possible to buy an 80-100l Res and make the nutrients up for the week? making sure to put a few airstones in to prevent the water going stagnant?

I know the nutrients in hydro res keeps for a while, are soil and hydro nutrients made differently?

Cheers

ya go for it but you should every other water be fresh

If you do set up a duel tank clean o2 rich water in one nutes in the other and dont forget dryness sensors and timers remember giving your plants the one on one makes them happy too and less risk of over watering and causing root rot and all the other bad crap but it can be done and done right just take time and figure it out

Hydro nutrients are a lot more powerful and can burn plants beyond survival in a few hours if you isolate 1 plant for trial it could save your crop.
I would not take the chance if everything is working good now.

I plan to water them by hand, just dont wont to fill up my watering can 4 times, ph the water 4 time etc etc...thats why i was hoping if i pre-mixed 80l in a res with air stones...would it last the week before i need to change it?

Just to confirm, is it ok to do this? Thanks folks!