Droopy leaves in coco mix

Not all coco coirs are made equal. Lesser brands have a lot of dust and small fibres, not buffered and can be salty. that dust traps and holds onto water like mud when wet. 70/30 is a good goal and you also need a good brand of coir or you have to prepare it properly and rinse it out and get rid of most of the dust in it. I love the brand CANNA as they do all this and more. Your bottom leaves also looking to show signs of magnesium. Its good to add in CaMg into every feeding to of set the coir's cation exchange sites that take in Mg and Ca and release Na and K. Good Luck!

They say you can't overwater coco but that doesn't mean you can keep it soggy either. Roots need access to oxygen to thrive. Ever notice your pots sounding like a bowl of Rice Crispies when you water? That's the air being pushed out of the media. You don't want coco to run too dry but you gotta give it a chance to get less wet too.

Try keep the humidity at 55% if you can all the time because at 70% rh the plants cannot transpire well trough their leaves hence they seem like over watered and droopy. Otherwise do not wet the whole pot at this point in time the plants are small and the roots haven't developed all over the pot, instead water lightly every few other days. Runoff water is only necessary when you are doing heavy feeds and plants take a long time without water to die as opposed to overwatering. Goodluck

You don't have proper drainage Your pots are on a tray filled with runoff water Bottom of your pots may lack necessary amount of drainage holes as well.