Phosphorus issues

I have what I beleive to be Phosphorus issues with my white widow x og kush.

Yet my white widow x big bud doesn't have issues.

I had high temp issues for 2 days with heat up to 94 degrees.

I since added a 402 cf fan to my cabinet, I know it's moving 11x the air per min but if I use a speed controller and I dim the speed down to half I have heat issues...

So I added a 120cfm fan to blow air into the cab which I think will give me less negative pressure.

I wasn't sure if the slight leaf curl is due to the negative pressure I had before I added the fan or if it was due to the heat issues I had.

PPM - 1040
PH 5.9-6.0
RH 44%
Temps high of 84 lows of 79.4

Light source: LED solar storm 400 @ 22inces above.

I'm at 18-6 with light


Ill post some photos tmrw but I sense Phosphorus issues mixed with heat stress for the curl but since I have a double edge blade of heat vs air flow being to strong I figured my plants will stress and die faster to high temps then low tents but oxygen moving in and out faster...

Am I right?

ph 5.9-6.0 are you in soil???

he listed a ppm number so sounds like hydro and that pH is too low for hydro yeah?

technical dan said:

he listed a ppm number so sounds like hydro and that pH is too low for hydro yeah?

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well yea but just because he listed ppm dosent mean it isn't soil are you a soil grower if so you must check you ppm before feeding

It's hydro, ill adjust PH to 5.3

PH is now 5.3
Water temp is 78.4

Ill post a few photos of the curling leafs shortly.

Looks like the leafs look "dry" but.RH is 4.4-5.4 I could always just mist their leafs today but I also don't want to burn them either.

Throw some bone meal in that shit.

I'm doing DWC Hydro..

RedzoneFL said:

PH is now 5.3
Water temp is 78.4

Ill post a few photos of the curling leafs shortly.

Looks like the leafs look "dry" but.RH is 4.4-5.4 I could always just mist their leafs today but I also don't want to burn them either.

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Spraying the leaves won't do anything for leaves that are dryed out and I think the plant need to recover from those 90+ temps. Time should heal the plant,with lower temps. Good luck.

Jimdamick said:

Spraying the leaves won't do anything for leaves that are dryed out and I think the plant need to recover from those 90+ temps. Time should heal the plant,with lower temps. Good luck.

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I'm going to be home all day tmrw so I can monitor the temps but I just set my house AC to 76 right now; I have a wifi controller for temps..

Really wish I knew how to keep temps down with the SS400 but nothing I can think of works.