I have a few leaves that are burnt. The 2 plants a...

Hey there, you're actually overwatering ! You can tell from the puffy leafs and the downwards drooping you're seeing. You shouldnt be watering daily, you need to wait a few days between each watering for the soil to get dry. That's because the wet/dry cycle is really important for the microbiol life in the soil. At your size pot you should water less than 2L ever 3 to 4 days. There are a few way you can use to see if you need to water : the lifting method or the hygrometer method. Just get a cheap hygrometer, stick it in the soil, and it gives you a reading. Otherwise lift your pots when they are dry then water them, lift them again make a note of the weights and use those to tell if you need to water or not. If you use these methods you will never over water again. Hope this helps ! 🚀