Im having a little issue with my Think different plant, it seems that its drooping a bit. With soil i'd say this is cus of overwatering, but since this is DWC what could be causing this? PPM was at around 700 so i lowered that to about 500, and lowered ph from around 6 to about 5.6.
Could it be lack of oxygen? I cant see it being anything like a MG defficiency cus i've been using these same nutes on my soil grow and its fine.
Roots have grow quite alot and are fully submerged, however the rockwool cube is quite wet. Could this be the problem? if this is the problem im not too sure how to go about fixing it, because it seems the bubbles are what is keeping it so wet. At this stage with the roots thriving in the water is it still possible to overwater and stunt the growth with it being too wet?
As you can see from the pic since i used a large RW cube its quite close to the bottom of the netpot
lights on temps are constant between 22C-24C and 14C-15C lights off, humidity about gets lowest to about 30 with lights on and 60 with lights off

Any ideas if its doing alright? thanks!
EDIT: Lowering the nute strength helped, perked up and doing nicely now.