Leaves turned brown and spotted over night

[Vic413]

Can anyone help me figure out what is going on? I can’t tell if it’s a Calmag problem at this point bc I’ve added calmag to my water and it has made it worse is it possible a nutrient deficiency? Or am I giving the plant way to much cal mag I used about a tablespoon per 5 gallons and have watered it 2 times a week maybe a liter worth of water mixed with calmag. This has been a problem with one or two new leaves but the last two nights it’s starting to appear on old leaves as well as new most of the leaves look like this the other two plants are doing good. Any advice?

 

[growsince79]

Ditch the blurple light.

 

[Vic413]

Ditch the blurple light.

Are you saying the light is the reason? Or better pics without the purple light lol. If the lights the problem this is the one I have HIGROW 1000W Optical Lens LED Grow Light Full Spectrum with Veg and Bloom Switch for Greenhouse and Indoor Plant Growing
https://www.amazon.com/dp/B01N7GBF2S/ref=cm_sw_r_cp_api_glc_fabc_FkI4FbGG3N0CP?_encoding=UTF8&psc=1

 

[beluga]

Your light is fine.
It does, however, make it hard for people to diagnose plant issues.

 

[Flexnerb]

Ditch the blurple light.

No fuckin doubt! Get rid o that shit...not tryin to be an ass yo...its hard to see issues under them. Makes little sense to buy them because of that...had you not had the light you probably would have noticed the problem sooner...

Probably could use more cal mag. 1tbsp per. Gal is kind of light if using RO...whats your water source ppm? Any idea what your alkalinity of your water is?

A whole plant pic under white light would be great

Happy growing

 

[growsince79]

I tried a purple and.it did the same as yours. The 10w chips work ok in veg but fry's in bloom. How close is it? re the plants closest to the light the worst?

 

[Vic413]

Pictures without the light on

 

[Vic413]

I tried a purple and.it did the same as yours. The 10w chips work ok in veg but fry's in bloom. How close is it? re the plants closest to the light the worst?

It’s weird actually I though the exact same and raised the lights but the two smallest plants are both having different problems and the tallest one is thriving with zero issues right now the lights about 3 feet from this plant and 2-2.5 feet away might need to raise it soon to not screw with the biggest cola

 

[growsince79]

It’s weird actually I though the exact same and raised the lights but the two smallest plants are both having different problems and the tallest one is thriving with zero issues right now the lights about 3 feet from this plant and 2-2.5 feet away might need to raise it soon to not screw with the biggest cola

Might have root issues too.

 

[Beachwalker]

Pictures without the light on

Does this white stuff wipe off if you touch it??

 

[Vic413]

Might have root issues too.

I feel like I did over water them till about start of flower so like two weeks ago, Now I water every other day and stick my fingers about a inch in the soil and see if it’s dry. If it is root problem anything I can do to fix it? I also haven’t ruled out nut burn or deficiency I started them in a fox farm ocean soil then added powder 4-4-4 and 2-8-4 about week 4 I’m at the middle of week 7 right now and have done a lot of compost teas about twice a week at least.

 

[beluga]

For the record... it's not your light.
All sorts of lights can grow great weed, including blurples. You just have to know how to use them.

Does this white stuff wipe off if you touch it??

View attachment 1070341

^^
If it wipes off, it's likely powdery mildew.

 

[Flexnerb]

Might have root issues too.

The second pic from the bottom the inner leaf bronzing if seen that before and i had root issues...

For me i think the perlite floated up off the bottom enough to cause the bottom to hold more water than usual...

 

[Vic413]

Does this white stuff wipe off if you touch it??

View attachment 1070341

Took a look and it’s just some tricomes the light made it look like a white spot nothing came off when I rubbed it

 

[Flexnerb]

For the record... it's not your light.
All sorts of lights can grow great weed, including blurples. You just have to know how to use them.


^^
If it wipes off, it's likely powdery mildew.

That might be light reflecting off the shinny surface of the serations that are folding up

 

[Vic413]

The second pic from the bottom the inner leaf bronzing if seen that before and i had root issues...

For me i think the perlite floated up off the bottom enough to cause the bottom to hold more water than usual...

Honestly probably the case sadly my soil is hard to the touch when it’s dry and mud like when it’s wet I should have added more perlite then fox farm gave me, that mixed with the overwatering definitely might be root problems is there any thing at this point I can do to help it out?

 

[Flexnerb]

Honestly probably the case sadly my soil is hard to the touch when it’s dry and mud like when it’s wet I should have added more perlite then fox farm gave me, that mixed with the overwatering definitely might be root problems is there any thing at this point I can do to help it out?

You can barely scratch the surface with a fork no more than an 1/8 of an inch down.. do this after watering next time .then let it dry out.


try sticking your finger into the bottom too..not much you can reslly do.....how many weeks left?

 

[Vic413]

You can barely scratch the surface with a fork no more than an 1/8 of an inch down.. do this after watering next time .then let it dry out.


try sticking your finger into the bottom too..not much you can reslly do.....how many weeks left?

It’s a fast auto the package said 8-9 weeks but I assume it won’t be done till week 10 earliest, buds not really done forming or getting dense yet, if I let the soil dry out completely and wait for the sides to pull away from the pot and add perlite all around the sides could that maybe help the roots breath better?

 

[Flexnerb]

It’s a fast auto the package said 8-9 weeks but I assume it won’t be done till week 10 earliest, buds not really done forming or getting dense yet, if I let the soil dry out completely and wait for the sides to pull away from the pot and add perlite all around the sides could that maybe help the roots breath better?

You will most likely be kicking yourself if you do that. If the sides are pulling away thats bad..roots do not like that. Your shrinking your rootball stressing it out...

Just think what happens to concrete when water gets in and freezes...well it cracks right? So shrinking expanding repeat will damage your roots....squeezing the life out of your roots so to speak

 

[Vic413]

You will most likely be kicking yourself if you do that. If the sides are pulling away thats bad..roots do not like that. Your shrinking your rootball stressing it out...

It hasn’t dried out to the point of pulling away yet, I’ll definitely do the fork thing today when I water. As for nutrients should I add my last feeding of 2-8-4? Or would that be overkill. Also should I leave the leafs that are browning or should I pull them off the plant?