Wtf again

The coco coir looks like mud and compacted. The biggest issue is overwatering(no oxygen at the root) and temps at 25? Too high. RH at 45 is way too low. Seedings have a low tolerance for temp and humidity swings as well, so Daytime should be 20-23 deg, and night time 19-23 deg. 25-26 deg is ok when they are fully developed with 5 plus nodes and healthy. Or if your rooting clones. Use very low light for the next few weeks. You could grow at this stage with a single cfl and reflector, so pull ur lights away so there's no excess heat or light. Low intensity light and short dark periods will promote root growth. You want good roots before pushing for vigorous plant growth. 18hrs a day of light is best, IMO. Some go 24 hours, but I find roots grow faster with the dark cycle. Add some perlite to your coco in the future for extra drainage allowing more oxegen, greatly reducing the chance of overwatering. Try to get your RH up to 60 at the least, or 70 if possible at this stage. Maintain 60 through veg (after 5-6 true nodes and on) is ok.. Avoid fans directly on the seedling as well. A little wind helps with temperatures and also stiffening the stem making it stronger. I suggest small fan against the wall of your grow space. Some say dont let Coco dry out. My thoughts and experiences are, at this stage, you need to let the roots develop, so let it dry a bit so the tap root chases the moisture. Once you see roots at the bottom holes of your containers, usually after a couple of dry cycles (2-3 weeks). When watering your seedling, apply slowly, like 1" or 25mm away from the base of the plant. If your pot is oversized, I would use a 100ml long syringe to get water to the bottom of the pot directly below the seedling. If you're using RO water, add 1 cup of tap water per gallon of RO. I do agree with the flush and precharge comment 100% with clones. I flush the dust out of the media to prevent jamming up the pores in the media that would otherwise contain oxegen for the plants roots to uptake the correct balace of water, nutrients and and oxegen. I do mine after adding 30% perlite. Pre charge can cause issues with lockout as the cotyledon leaves will provide everything these seedlings need until they have their first true set, 5-7 finger fan leaf. Excess nutes would cause lockout and burning. Realize that many of the calcium products have nitrogen content that you don't need at this stage. So be selective. As I mentioned, wait until the cotyledon starts to yellow before feeding anything. In Coco, you generally need "extra calcium." If you're using tap water, it can become a bit of a challenge to find the right dose of extra calmag. If using RO, use the full strength recommended dose.. It's also important to remember that the seedling stage can last several weeks, so try to be patient. Let the roots have explosive growth first. Bigger and healthier the roots, bigger and healthier the fruits. Happy growing

If both of plants have the same terms, genetics may be to blame. Kill it and start a new seed asap

yup bad seed here buddy. nothing you have done dont worry.

Not all seeds make it.........some are duds.

These are all you old questions on the same subject in the last few days. 1) growdiaries.com/grow-questions/65757-please-help 2) growdiaries.com/grow-questions/65745-something-wrong-with-leaves 3) growdiaries.com/grow-questions/65791-omfg 4) growdiaries.com/grow-questions/65805-nutrition-issue

Same answer as your other questions. reference them. asking the same thing over and over is not really going to do anything. Are you waiting to hear the answer you want/think it is? and if so, what answer do you want/this it is? As I doubt that's it and won't solve your problem.