Need a consult - yellowing leaves turn brown, and plant always droopy

One plant is always droopy, no matter how much I water or dry the soil.

The other one has leaves which turn a brilliant yellow, and eventually brown/burned, starting at the tips moving towards the center.

Both seem to be growing, but very slow. I did not give them any nutes (there was prob some in the soil), and it's bag seed.

and the last plant, does it look OK?

yellowing is probably nitrogen defieincy.they really need that for growth

its possible you might also be overwatering. that will have similar effects of dehydration. many people keep adding water because they think it needs more and its dry. over watering will rot the root sytems

For the yellowing, do you think I should water with a little blood meal next time?

as for the overwatering, are you talking about the droopy plant? The soil is pretty dry.. maybe it was overwatered and that caused droop, and now the underwatering is causing more droop?

Is it possible to tell if it's over/under watering causing this now?

thanks!

Get a moisture meter... I would also flush the bigger one to get any excess nutes that might be locked in the soil. Is your water at the correct ph? Remember to always flush 3times the capacity. Then When she drys up id feed her 1/4 strength nutes. Also what lighting system are you using? temps? rh?

RH is ~50-55%, temp is 80-84F, light is a 600w MH and 1 23w fluorescent

Fan is constantly blowing on the area between plants and light, else the plants will get baked. The plants are constantly vibrating, but not excessively.. is that bad?

Soil is miracle grow w/ time release nutes that I was using for house plants for a few months and water is tap that has been sitting "stirred" for a few days to evaporate chlorine.

Using bad seed.

So its 80-84 at the canopy of the plants (like to top part?) If so you wanna lower that... plants thrive in 72-75 degrees. 600w MH is a great light, what you planning to use for flowering? What do you mean vibrating? I would suggest raising the light... unless you can have a fan blowing up to the light to cool it off a bit, cause you want it as close as you can get it with it staying about 75 degrees. you want the plants to be blown on to, to strengthen the stems. The thing about soil with nutes in them is you never know how fast they take them and when their out, I would suggest flushing to, to get the excess shit out of there before you feed. And on the tap water, you may let it sit out but it could still be to acidic or have to much alkaline. I would really get a PH tester if I was you, watering with un PH'd water will lock up your plants and they wont be able to take in nutes, disabling most of there ca,mg, and nitrogen intake. Oh and your RH is perfect where its at... if you can maybe raise it to like 65... other than that man you got the basics down... hope this helped.