One of the leaves has brown spots. Any ideas? Bugs...

Hello ! I have exactly the same issue with my Fruity jack diary , she wasn't overwatered but I put her in a rich soil which burn the flower a bit then she settled in her pot and stop doing it. In your case , 0.25L per plant per 24h is too much , you need to reduce your water amount to avoid over watering and roots rot. And as you'r using RO water you'll need to add Cal-Mag soon , maybe on week 3 as soil should have enough until then. You should let the soil dry , then transplant them and start the cal-mag with your regular nutrients ( week 3) .I hope it will help you 😁👍

Hi @MansionMarijuana! Well I think you overwatered your cups, and as a result, roots are suffocating, they're not able to handle nutrient intakes anymore (nor to breath oxygen). Plus, RO water has nothing to offer to the roots, if you don't add nutrients and have a light medium/soil, they will encounter deficiencies. What medium are you using (brand/name)? My advice would be to transplant them into bigger containers, let the medium dry a bit, then give a good meal (mostly Nitrogen) and see how it goes. If this is not getting better after a few days, come back here to find help, we will refine the diagnosis based on your latest pictures and informations. Hope this will help, keep us up-to-date and happy growing 👊