Need some Rx (with pix)

these are a couple of my plants right now. they are about 3 weeks old and started from seeds. i have them growing in a "bubbleponics" type system that i fabbed up myself.

The temp is about 80 degrees, ppm is just over 900, and i am watering 24/7 with two airstones in my res.

The leaves just started getting these bright yellow spots on them, and then the spots just started spreading. some of the plants are even starting to look a little droppy.

any help would be appreciated.

p.s. i also have a 1000 watt m.h. on them right now

also, the ph right now is 5.7

please guys, i really need some help

any one have any ideas?

i new but i guess water quality, nute burn, or not enough oxygen but that osunds bunk. I though drooping menat over watering lol. Nut burn at that ppm i wud not know, i new so i just guessing, uh sorry.

Drooping leaves are usually a sign of over/under watering.

do you think i should put them on some type of watering regiment cause right now i just have them watering 24/7?

anyone have any ideas for watering times on a bubbleponics type system?

what are the water temps

flush out your system use a lil nutes

and go from there