leafs went from curling up to curling down during flush?

Don't know what's going on with my plant. A week and a half ago the plant was beautiful healthy and bushy. Now the lower outside of it looks like death walked by all the leaves have dark brownish tan spots and some parts of the leaves have dried up and crumpled off. the lower inside looks healthy but halted growth, and the top main stems are getting brown spots and holes. The whole plant has halted in growth. This all started when I switch to 12/12, switched to an hps light and switched to Lucas advanced formula. I put back in the mh light that it loved and flushed it. Im 4 days into the flush and the brown spots haven't really spread anywhere else and the leaves aren't brittle anymore but it still looks like the plant is dying in spots. The leaves went from curling up to curling down on most the leaves. Most places I've read recommend a 3 day flush for a 5 gallon dwc so I put it in nutrients again but only at the normal Lucas formula since she loved that. Any tips on what to do now? I will try to get pics up in a bit if they are needed?

Sounds like some pH fluctuations, and possibly overfeeding...just back off on the nute strength, make sure no light is getting in your bucket, and make sure your water temps aren't too high...because high water temps, light in the rez, pH flux from having too small a rez, and over feeding can all cause the symptoms you have described.

Sounds like nite burn but its hard to diagnose with no pics. If u get some pics, I can probably help u out.

Nah, he is new with DWC...I can assure you I need no pics...it is all the things I mentioned above in combination, I would nearly bet on it...DWC is tough til you get all the light our of the bucket and can keep the water temps cool enough, and it is so easy to overnute when light is getting in the bucket and the pH is too high or too low, because of nutes...so on and so forth...newer people including myself always have the same issues starting off...

here are some pics. Sorry about the quality. My daughter dropped my phone and it doesnt really take the clearest pics anymore.

Im also using Lowes buckets which I have read are light proof from the get go.

1 1/2 weeks ago


Last night

Again, check your water temps and pH...it looks like it has been fluctuating a lot...in DWC I could never make that stop..so I gave up, and started growing some kick ass soil plants...Yours look better than mine in DWC did though...

Ill check the water temps in the morning but the Ph has always been maintained at 5.8 every now and then it will raise to 6.2-6.3 but I@ always put it back to 5.8.

BTW thanks for the help

Water temps are at 74 with the lights on. Is this to high?