I recently transplanted and watred with 1/4 of pot...

Shaggy has some good points.. Over watering is a very real and common/easy problem to get. You can weigh your container wet and dry so you know when to water... but you WILL LEARN OVER TIME how to move it around and judge how wet/dry it is.... like picking up a gallon of milk... you know how much is left... It takes some time and you will mess up.... UNDERWATERIG is generally easy to fix and the plant is fine the next day... overwatering and your plant takes weeks to recover and you will probabally get bugs... Best of luck, hope this helps

Your day temp is a bit low. If you can get temp to 26 with more light or other heat source,your plants will evaporate more and intake more from soil faster.soil will dry faster. If its wet i wouldnt water now

If the top near the stem is still wet i would not water. If it is dry you can add some water to the top but don't go crazy. The reason may not even be a nutrient deficiency but the PH being off to where it is locked out. The PH usually falls and rises depending on how wet/dry the soil is. Don't want it too wet or you will end up some funky egg smelling soil usually caused from Anaerobic Bacteria not only that but your chances of getting Root Rot are high. Water based on weight would be the best bet as they all require different amounts really. GL.

Overwatering can lead to root rot, so best not to add more liquid until the pot is not very wet any more. Which leaves are turning yellow? If it is just the older lower stem fan leaves, don't worry too much if those leaves's side shoots have healthy fan leaves on them. You want to get to a point where you can give some feed but not into a wet pot. With transplanting, I usually water the plant the day BEFORE transplanting, then when I transplant into a bigger pot, the roots hold together due to the moisture. This also means I don't need to water the new larger pot for a while. Additionally, weigh the larger pot with media in it to get a base weight of a dry pot, so then you know when to water again :)

First, it's too early to be feeding in a 7 liter pot of soil and what's more 1.3 EC (650 PPM) is too high for seedlings. If you are seeing some yellowing (did not see it in the pictures) It is most surely from over watering. Roots not only take water, they also take oxygen and when you over water, you literally drown the plants since they can't take any of it. Now for a watering schedule I usually use this: for recently sprouted seedlings, give 200 cc, it should last 5 days, when the soil is dry repeat, when the times it takes to dry is 2 days, increase to 500 cc, should last 5 days again, and water again with same amount, when the time it takes to dry is again 2 days, increase watering amount to 1 liter, same story and increase to 1.5 liter or 2 liters. I usually stay at 1.5 liters. For your plants size I would give 500 cc.

Hi there! If the soil is still wet don't re-water again, you'll generate an overwatering stress and stunt your plants for a few days/weeks. I'd recommend to increase your temperature a bit, in order to dry the soil faster. You can also add a small fan blowing straight to your container's surface at slow speed. Once your soil will be almost 100% dry then you can start feeding again following your regular nutrients schedule. It's important for roots development to alternate between dry-cycle and wet-cycle. If your affected leaves don't recover are dying, just tuck them and carefully check how the other leaves react. Hope this helps, I'll be around, good luck with these beautiful babies!