First time. 1 Auto, 5 feminised

Hello StokieNick, water between 10 - 20% from the pot volume. In your case I would give 500 ml each time. Let the top inch of the soil dry out completely in between waterings to prevent overwatering. I do prefer the water-feed-water-feed schedule where you just give water with the right pH in between feedings. This to prevent nutrient lockout and nutrient burning. Also water till 20% runoff occasionally for the same reason (once in the 2 weeks). Enjoy your grow!

At this age photos or autoflowers I like to keep the top of the soil moist and bottom feed. When most of their water comes from the bottom The Roots stretch towards the bottom looking for water so if you don't water for a couple days they're going to keep stretching down there looking for water and then when they get it there's a bit more root to take it up

Don't forget that Autos will not tolerate high EC feeds like photoperiod plants will. They can go into shock and enter flower earlier then expected. Less is more with them. up to 1/3 to 1/2 the strength. I have used feed water feed before on peat medium grows, its not the same as coir but it is very close. it still worked out for me. When giving only water, water for what is needed, no runoff. Then get 20% runoff when they are getting their feed. Not everyone has the option to be wasting nutrients and I like to try and spread it out a bit. Ideally the best option is to feed always and get 10-20% runoff each time but its not always possible. when we say % on runoff its percentage of the pots volume. eg 1000ml pot [10% = 100ml] [20% = 200ml] and this is only if your feed is correct. Might require a bit more runoff to fix a overfeed. Good Luck!