Didiciancy already posted but not got enough answers

Agree with b4rns regarding the calcium and nitro. But you're using soil and I think it's showing overwatering now, too (drooping, sleepiness). If you need to buffer, calcium, potassium, magnesium and high surface area carbon (like char). Usually I'd say calcitic lime and charcoal/potash sort of stuff + maybe some epsom salts in that case. But you'd want sort of hydride/liquid versions of that, coz those are more soil amendments, not quick fixes.