Mmm... I don't know about the threads thing. This is a good place to find answers though in Problems.

To top up the res, just add more water and check your ppm and pH.
Lose the superthrive- N overdose can cause drooping and ST has a LOT!
stinkyattic Reviewed by stinkyattic on . Noob's Great Grow...Grow log to come El Chupanebre's Setup E-indoor or outdoor E-soil, soilless, coco, aero, or hydroponic E-specific medium rapid rooter surrounded by hydroton CSL-Soil type/brand HCL-Hydro/aero/soilless system type NFT constant stream SCL-Anything you have added to the soil SCLR-Soil or slab runoff pH Rating: 5