i disagree. use cal/mag for one plant, don't for the rest. simple supplement. i guarantee the cal/mag buds will surprise you, while the others don't meet your expectations.
weight and size is one thing; density is another. light is a given. ;)
\3g bags are fine. i start with cups, go to 1g, then flower in 3g. 5g bags of dirt are real pitas, better to have buckets once you get that much dirt going.
is there anything on it that burns? ie, oil, insulation etc.
if not, the ballast is bad (i'm assuming old) and needs to be replaced. when one dies, they go up in a big stinking poof of smoke. ;)
go through and disconnect all wire nuts (one at a time) and check each connection. then plug it in. a hps should fire immediately unless the bulb is hot or the ignitor is blown.
or, if you have a lamp cord longer than 15' (for most ballasts). how long is the cord from the ballast to the lamp...
mh?
sometimes it takes a minute. plug it in, wait for a minute or two, and see if it sparks. i have a mh that takes about 45 seconds to fire, but always does. my other mh is instantaneous.
most elite clones are severely over rated. i'll match either of my best creations against any cali clone any day and KNOW who's going to win. that's the point of going through seeds; finding that ONE individual that just totally blows the standard away.
throw the shultz away. pot does not like super phosphates.
don't flush, just water and superthrive.
if you can't get to a hydro store, get miracle gro all purpose 24-8-16, and give them a dose of that (level scoop from the small side of the spoon for one gallon). this'll help get them back up...
2-4-1 is high for p, low for k. you could be looking at phos toxicity (which is what it looks like).
i burned the hell out of some pickier strains with fish poo, so i nixed the use of it. i'll use mg in veg, but you can't beat a nute program designed for and tested exclusively on mmj.
stop using the fish shit. some plants don't like it at all, and that's generally the result, shown in your pix.
go with a good 3 part formula made for medical cannabis (ie gen.hydroponics or ad. nutes)
actually time is what alters the compounds and causes them to break down. NOT uvb.
otherwise, hps flowered pot would have NO POTENCY unless suplemented with uvb. mh doesn't have enough uvb to be beneficial either, it a minimal.