got another prob

[Teh_Baker]

Ok well, here we go, another problem that just popped up within the last week. I dunno what my EC is or my ppm. I run at 560 watts light, fed with PBP Bloom once every week and half, run off water is ph of 6.0 I ph my water to 5.5
I flushed the plant tonight just after the pictures with 2 64oz cups of water ph'd to 5.5-5.8. Does anybody know what caused the yellowing? Or how I can fix it if the flush does not work? By the way, I update plant ages daily in my signature. The plant in question is CW @34 flower today.













Teh_Baker

 

[SinsemillaJones]

Mg def?

Mg def?

Cal Mag? Epsom Salts?

Do I think I'm on Jeopardy or something, Alex?

 

[Guest]

It's cause ya need CalMag.... PBP does not include enough Calcium or Magnesium in it's base nutrient. If running PBP you always need to add in CalMag.... for a single nutrient solution, switch over to Floranova bloom. Otherwise, get some CalMag asap!

 

[Blackvelvet]

1 teaspoon epsom salts per gallon of water once. Be aware that once mag def occurs it can be difficult to correct.

 

[Teh_Baker]

I have MagiCal already, I just havent been using it. I have already been told that its a lockout problem due to Iron build-up. I'll see how well the flush remedies the problem. If it does nothing then I will use the MagiCal that I have.

Teh_Baker

 

[DIGITALHIPPY]

I have MagiCal already, I just havent been using it. I have already been told that its a lockout problem due to Iron build-up. I'll see how well the flush remedies the problem. If it does nothing then I will use the MagiCal that I have.

Teh_Baker

start using that cal-mag then!!!
thats a hardcore cal/mg def.
black spots r from calcium def.

your probably using RO water? (good thing) just addback with the calmag.

 

[Teh_Baker]

No, I'm not using RO water, good old tap water at 7.0-7.4 pH. Unfortunately I cannot IMMEDIATELY start using the MagiCal, I Have to wait a few days till the soil dries out. And Im pretty sure that the Mg def is from a lockout problem, so if I start adding more nutes its not gonna do a whole lot of good. The spots that I have are not black, they are red in color, which leads me to believe that the problem I am having is from a build-up of Fe(iron) causing a Mg def(also Iron oxide(rust) is red in color)

Teh_Baker