Is this a calcium defficiency?

[Texassativa]

Thats what soil growing is for. If you think you can wing a hydro grow without the meters then you will be frustrated to say the least if not just wasting your time.

WERD.

 

[Sauce]

Senseless that does look like nute burn. Depending on how far along those are you might want to consider flushing soon. Back off on the nutes at least.

 

[mace_ecam]

could be nute burn, ph issues, temps or all of it.

let the guessing begin!

 

[Verite]

General consensus is global warming.

 

[coolx]

heres a few pictures i took this morning. im leaning toward nutrient burn or calcium def.

i also took a ph test with the GH ph drops and my ph looks to be around 5-6 so i guess thats in check.


thanks for all the help so far guys.

Senseless - did you ever figure out what you had? I have the exact same thing going on with my OG Kush too.

With the first pic in the post - I had the spotting - I thought was CA def, but then I had real low ph and I overfed organics would you believe.

Then I also have symptoms like the pic above, which to me looks like K def (caused by ....?). I've noticed that the OGK seem to easily get K def cos I'm growing W. Widow and feeding exactly the same as the ogk, but the kush got the burning at the margins.

 

[sproutco]

It is important to keep the ph between 6 to 6.5 in hydroponics. You are adding calcium already.