Flushing to get pH corrected

[jayc93]

Hi guys I'm having some trouble with my pH I believe that I have a lock out of phosphorus as I have red petioles and leaf stems I have just flushed with 3x the amount of the pot size with non ph'ed water which is 7.5 from the tap the run off hasn't improved atall as my test indicator says its at the bottom of my chart 6 (yellow) the tap water going in is 7.5 (blue) in the vial so how isn't my pH rising ?

 

[Resinhound]

heya man,runoff PH can be misleading,what medium are you growing in and whats your lights on lights off temps? P uptake is severely hampered if the rootzone is below 60f.

 

[jayc93]

This is the main leafs affected

 

[jayc93]

Plant magic soil light mix I think it is and plant magic organic oldtimer grow with biobizz bloom

 

[jayc93]

Lights running led 24/7 temps range from 22c to 26c temps have never dropped below 22c maybe my water was too cold?

 

[jayc93]

It appears on new growth after a day.... Really pissin me off now

 

[Resinhound]

could be caused by cold water yes...runoff ph is not a reliable method for checking soil ph.Anything that keeps that pot cold,sitting on a cold floor,watering with cold water etc,will severely limit P uptake.

 

[jayc93]

I'm going to throw in the towel with this organic crap finding problem after problem with it now I'll buy some pH perfect nutes next round that will solve the problem as well as using room temp water