hey there, the growth rate is determined by VPD, right now you're in a seaside climate and instead you should be at coastal mountain climate. Reduce temps by a degree or so, humidity you're good but it's okay a few points higher too, reduce your solution temperature to a cool 20 and get the substrate a bit cooler too : something like 22/23. These little shift will really help especially if you put them together. BTW i'm seeing some magnesium issues as well : never grow without cal mag, even in soil ! Hope this helps ! 🚀