First ever grow autoflower

Bit later here. Actually 4 days in to week 6. Day 38! Last week I flushed out the plants until there was plenty of run off, flushed them with plain water. Then shortly after I flushed then again until there was more run off. After that I left it be for what seemed like ages. I wanted it to fully dry out. I waited too long. Went to water today after almost a week and some bottom leafs was yellow, due to underwatering the plants. I watered them with nutes, not as much this time. No run off but any more water and there certainly would have been. I removed yellow leafs after watering them. Have grown some more. It's certainly a learning curve! Plants still look healthy I reckon and previous symptoms seem to have halted/gone.