Subcools Supersoil grow problems

Ok so to start off my plants are 6 weeks into flowering from when i first saw pistols. (add another ten days from when i flipped to 12/12). Everything seemed to be going great until about last week. I started to notice some yellowing on the bottom leaves, then they started to get the claw look on the fan leave of two plants. 3 of the plants dont really seem to have grown at all in the last 2 weeks, and the 4th seems to be growing very slowly.
So a rundown of my grow to date: started in 1 gal containers of just plain roots organic potting soil. LST trained, then transplanted at day 23 into 5 gal buckets with supersoil on the bottom 1/3 of the bucket( subcools recipe, cooked for 8 weeks). I flipped to 12/12 10 days after transplanting. I vegged under 2 100w advanced led diamond series lights. When i switched to flower i changed the light 2 weeks in to an aircooled hood 400w hps. They have been fed nothing but water and some great white.

Ok so when i started to see the shitty leaves turning up i figured it was that the supersoil was too hot, or they were getting hungry. So after hours of internet searching, and the fact that it has been 9 weeks total since they were transplanted into the 5 gal buckets, i thought it was that they were hungry. SO i topped dressed with a couple handfulls of supersoil, thinking it would combat the problem. It didnt, but now im wondering if i really over nuted them or if i just didnt top dress enough cuz they were really hungry. Anyways any input would be appreciated. Really wondering if they are salvagable or if i should just cut my losses and start over.



heres some pics of 2 weeks prior when they looked healthy.



oh yeah, guess i should mention this is my first grow ever. 100% legal CA medical use.

They are burnt bad, but that mix looks dry in the first few pics.

I'd water well and ride it out for a week or so, see what happens.

Was the SS moist while it was cooking? Looks like the amendments weren't fully broken down.

Wet

thats what i figured. The supersoil was moist and i got the white web as well. Left it sitting for 8 weeks mixing bout once a week. The supersoil stays very moist on the bottom of the buckets, so i only need to water like once a week. Been following the same watering cycle pretty much the whole grow and they were doing great, then bam, one looks like its dam near dead now. Does flushing work with soil, or will it just increase the problem.

That doesn't look good man. Death by Osmosis.

i would bet anything your root system is fucked.

5 gal buckets with that much soil and that size plant = top 1/2 of bucket is Always dry and bottom half of bucket is ALWAYS wet

thanks for the replys, anyone think they are slavagable? or just junk em?

ont mean to sound like a dick, bt youre title is miss leading,,,not the soils fault

ride it out............water them.

i know its not the soils fault, its my problem with supersoil,anyways got you to look though.

just an update, 2 are dead, and 2 seemed to have pulled through