Snype my Canopy temp 78-80, PH 5.7 - 5.9, ppm 500, RH 49-52% light is about 15 inches above plants, The pump is Active aqua commercial pump 110 slm, 600 watt MH light. I have a stone in each bucket and two in the res... I started the veg process with Lucas but since have switched to the GH Adv. DWC schedule. Right now Im running the nuts at approx. 500 ppm... Im about to get a good EC meter so I can be more exact. I have had a hard time gauging ppm going up or down because Ive been frustrated fucking with it too much. However, I have it at 500 right now and Im letting them chill for a few days. Do you have any ideas based on the photos. The plants look like a little old man getting older... Hope this helps.
If you're not going to keep data to know how your PPM acts on a day to day basis, I'm not really going go be able to help you. You're telling me what your PPM is as of right not but according to other posts of yours you were much higher before. You won't even list how much of each bottle that you are using. I can't sit here and play guessing games.
All that I can tell you is to raise your 600 watt light to about 24" away from the tops of the plants until your plants look perfect and then you can lower the light. Also, your humidity is low. I'd raise it to 70% for the temperature that you are at. Also I'd have to assume that if your canopy temps are at 80 degrees than you water temps are probably high. That's one of the reasons why I wanted to see a picture of your roots.
As far as nutes, I'd change out the rez and add:
4 mL General Hydroponic FloraMicro
6 mL General Hydroponic FloraBloom
Those rates are per gallon and pH'd to 6.0. Also add 1 drop of Clorox Regular Bleach for every 2 gallons.
You really need to put a clip board in the room and record your data every 24 hours including:
Stage / Days
Air Temp
Water Temp
24 hour Low and High Humidity
PPM data Before top off
PPM data After top off
pH data before top off
pH data after top off
height of plants
distance from bulb to canopy
anything you did or added to the rez
any other notes that you can think of
If you want to learn how to get better, you'll have to put in the work. If you're not going to keep data, you may want to consider going back to soil.