GG4 brown spot.

Weed seedlings are particularly vulnerable to environmental stress. Too much or too little water, extreme temperatures, and nutrient deficiencies can all stunt their growth. Seedlings need consistent moisture and mild temperatures to thrive. If they don't get these things, they may grow slowly, become weak, or even die. You might notice spots on the leaves of your weed seedlings. These spots can be caused by a few different things. Fungal diseases often cause dark or discolored spots, while insect infestations can lead to small, irregular marks. Sometimes, nutrient imbalances can also cause spotting. If you see spots, it's a good idea to check for pests or diseases and make sure your seedlings are getting the right nutrients. In conclusion, weed seedlings are delicate and need careful attention. By understanding the causes of stress and leaf spots, you can help your seedlings grow into healthy plants. Keeping a close eye on them and addressing any problems early on is key to success.

Yeah don’t worry too much about the spot on your plant. When they are small they are sensitive to everything and leaves usually don’t repair so just like a small kid it will outgrow those leaves in a week

Hey there it’s about time that you start filling watering the pot and let like 20% water run out the bottom This way the pot will stay wet for a decent time period and the roots will get down to the bottom It’s ok if it takes 7 to 14 days for it to dry out the 1st time just make sure not to water early only water when pot is super light and the top inch or so of the soil is bone dry and like powdery to the Touch ID the soil still clumps together at all in the top inch inch half it’s not really yet When you do this you want to watch for the plant to show slight signs of drought the leaves will perk slightly less in the afternoons and the will start to fall a little earlyer than normal at the end of the day When you water it after it gets to this point make sure to water right b4 lights out then when you look at the plants in the morning they will have had some serious growth in one night If you keep watering like this the plant will start to grow faster and faster and stronger

Hey growmie, that brown patch looks like a minor early stress mark, probably from light splash burn or rough handling. Not a deficiency, not a bug — don’t stress it unless it spreads. Since you're using a coco coir mix, the key is frequent feeding with runoff once roots are established, but you’re still early (Week 2), so you don’t need to flood it yet. 1L every 2–3 days is fine if you're getting light runoff and the pot dries evenly. But if the pot still feels heavy before watering, you might be overdoing it, even in coco. Tip: Always feed coco with light nutrients + 10–20% runoff, no plain water. Coco needs consistent nutes to stay buffered and avoid lockout. She's looking good overall. If you’re not already feeding light CalMag + base nutes, start now at 0.3–0.5 EC and work up.

maybe, combination of a hot soil and also coinciding cause of not letting rootzone dry out enough between irrigation? More than one thing happening here unless the odd leaf development is genetic. When nutes are out of balance or unusually high, pretty normal to get funky leaf growth or fewer fingers... here you see a lack of seration etc. If it grows out of it, chalk that part up to genetics. sounds like you are choosing a volume and frequency out of the ether. that's not how you water. The plant and pot size dictates everything. You give what is required to get the job done. you only learn the volume to provide retroactively. 1) fully saturate -- whatever volume it takes to do this competently. If in soilless, also get a 10% or greater runoff. This is waste water that is no good for a potted plant. An outside garden or a drain is a good place for it. 2) wait for appropriate dry back -- this is where you have some control. If you consistently re-irrigate at same loss of water weight, it will require the same volume of water each time. If deviating from this, you are doing it wrong. A good wet-dry cycle, especially early on, is integral to proper root development and lowers risk of pathogens. In general, you shoudl wait for soil to dry about 1" deep. Learn the weight of the 'dry' pot. Weight is an easier trigger. NEver let the plant wilt. That is waiting too long. You can push frequency in flower if you want, but you still need at least 'some' dryback. in a soilless context 33% dryback is generally okay. In soil, you probably want a higher threshold. If normal watering habits explained above ever cause droop, it is 100% the fault of how the soil is contituted. It needs more perlite or similar in such cases. Fully wetting teh pot should not drown the roots. That should take several minutes of over-watering to have such an effect with any competently constituted substrate... e.g. you water to runoff then continue to over-water for another 10minutes and droop is inevitable, lol.. but should not occur from basic irrigation.

The brown spot on the leaf isn’t a major issue by itself – could be from a water splash, minor physical damage, or early sign of a calcium or magnesium fluctuation. Your watering schedule sounds okay, but don’t go by days – go by pot weight and soil feel. Only water when the top few cm are dry and the pot feels noticeably lighter. Overwatering young plants can cause more problems than a small brown mark like this. Keep watching new growth – if that stays clean, you're fine. btw 1L? 30L pot? such impressive numbers 😅 I think she is just scared because everything is so big.