Thirsty?!

First things first,overwater 100%,dont water every day just once 3-4 days or when the pot is light weight or you can put your finger 2/3cm in so you can see if its dry enough.just let them now completely dry enough and then water. Hope i help :)

When it comes to when to water......deep water to run off.....then wait until the top inch or so has dried out completely..... before deep watering again. Hope this helps, Organoman.

Watering every day is a no-no. Water deeply and to run off every 3-5 days, depending on temps, plant size, container size and air flow.

You don't have a diary for this so I'm going to tell you that curling leaves such as this are the result of over-watering (the state of being constantly wet) OR under-watering OR a nitrogen toxicity. Without a diary, it's impossible for us to tell which one is at fault here.. but I'm going to guess it's both underwatering and a nitrogen toxicity because you're giving 1L every day which isn't enough to flush the nutes and salts out of the soil.. - When you water, you need to make sure you're watering enough to get 10-20% runoff It's also possible that your pH is not in a good range? But a diary would tell us that... Start a diary with as much information as you can - even if you can only go back 2 weeks... Good luck.

You should be able to feel the soil or see that its still damp? or how heavy the pots are with or without watering is a good way tell if its wet still.. Always let the soil dry out abit, the roots need to breathe oxygen.. Looks like a lot of water.. Hope this helps

Absolutely over watered