Hey guys, I need serious advice. I overfed them wi...

Hi @Hilkes_Herbs! Your plants were asking for Calcium and Magnesium (brown spots) and the slight yellowing tells us that she could also appreciate some more Nitrogen. In coco or any soilless medium, you should feed every time you water, your feedings must remain in the same pH range (5.7~6.3) and your EC should start very low and increase as the plant grows and becomes a strong adult. Make sure your pH pen is perfectly calibrated, then give your babies a good meal with some Nitrogen + Calcium + Magnesium. Water with ~20-25% of your container's size so you can have a runoff coming through the bottom of your airpots. Finally, your diary doesn't contain information about your relative humidity, but if you want a vigorous growth, you should try to get a high relative humidity environment for the vegetative stage, this helps a lot speeding up the growth. Take a loot at my diaries for some feeding schedules in coco! Happy growing 👊

That is 100% a calcium deficiency. Make sure you are phing you water to 5.6-6.0 so the plant can optimally absorb the nutes it needs. For the calcium deficiency make sure you water here and there at ph 5.9-6.0 as calcium is absorbed better at a bit higher of a ph. What I like to do is make up my nutes in my 25gal reservoir and ph to 5.6. Over the course of using the water, it slowly rises from 5.6 to 6.0 meaning the plants are being fed at a range of ph and getting access to all nutes. If you don't have a reservoir like that you can always just ph up and down the range every time you water. Next feeding add some extra calmag. You also have a bit of nitrogen deficiency indicated by the paleness of the plants. If you have been phing the water correctly then you need to either bump your nutes up a bit or feed every time you water if you aren't already(if you are in coco like it seems). That also doesn't seem like mold. It is likely just a beneficial or otherwise not harmful fungus.

I've been told that you can use hydrogen peroxide to get rid of the mold but I have forget how and which dose to apply so Google will be your friend , it works 100% with root rot but not sure about mold. The little depots on the leaves are a calcium deficiency to me so don't forget than cal mag isn't optional with any coco feeding . My last advice is to grab an ec/ppm pen to know the nutrient amount you are giving to the ladies and also to check the water runoff values as the output isn't always the same as the input and require some adjustment ( a flush or more nutrients depending on the ec/ppm level ) 😊

You've got a cal/mag def mate, give them a good plain ph waer + calmag flush to make sure the soil cleaned through and let that dry out before repeating. Do by weight its easy to tell. I would scrap the auto watering system until the girls are growing nicely. I very much doubt its mold! Give them a good feed every 2 waterings, with your pot size and medium I imagine it will be a daily watering.