Your soil mixes are a mess.
Neem coil I assume you mean coir? I can't imagine what else it might be. Coco has a bad habit of binding calcium, plus it's a soilless mix and needs to be treated like hydroponics, but you've added a ton of lime to raise the pH... ehhh... where did you get that soil mix anyway?

In my sig there is a link that includes a simple and very good soil mix.

For seedlings, you should either start them in rapidrooters or an unferted seedling starter mix like farfard. Happy Frog soil is fine too. If you have to go with a potting mix from the garden center, flush it out well and add some extra perlite before use.

Your soil holds too much moisture (from the pumice dust), traps Ca (coir), and is the wrong pH, among other things. Those plants are FRIED. Even if they survive, the chances of stunting or hermaphroditism are very high.