New Hydro System Droopy leaves

So i just built a new hydro system and after two days in the system its drooping like crazy ... the ph is fine and im confused... i thought that it would have grown a substantial amount by now ... or even any... but just droops... anybody know whats up?

artist said:

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Looks like overwatering to me.

Is there a rockwool cube below the hydroton seen in the picture? Are you using a dripper system or ebb/flow? What is your watering schedule?

no rockwool ...its just an air stone and the nutewater