what is the ideal ph for soil?

[budman678]

i have been phing my soil medium at 6.5 this entire grow. my runoff is around 6.9 now and having some issues in late flower with iron def. and necrosis.

what should i ph my nutes at if the run off is high? what do i ph the water at the next feeding to bring the overall ph of the medium down to acceptable levels? am i making sense?

shoujld i be watering around 6.2 consistently and from the get go

 

[geopolitical]

What is your soil mix?
What are your nutes?
How do you pH adjust your nutes?
How are you measuring runoff?

 

[Builtaforest]

Anywhere in the 6.2-6.5 range is fine. I shoot for 6.3 though...

 

[CannabisDog]

Anywhere in the 6-7 range is fine. Are you sure it is iron def, and not nutrient burn? Sounds like your PH range is fine for soil. Maybe we could get some more details.

 

[tube dude]

How late into flower are you? Def. are common durring late flower. Especially durring the last 2 weeks. The plant knows it has reached the end of its life cycle and stops Pulling nutes from the soil. Instesd they pull the nutrients from the leaves.

 

[headband 707]

Iron can only get in at 5 so try to get her down to 5 to get your iron in peace out headband707

 

[driftersmokinjo]

This is a handy lil chart that has been passed around a bit

 

[dreadedhead]

I like to add dolimite lime to my soil and it keeps it between 6.2 and bout 6.8

 

[growingcrazy]

I like to add dolimite lime to my soil and it keeps it between 6.2 and bout 6.8

Done. All that is needed.

I do add a measured amount of vinegar to each gallon. Ph drop and micro's.

I am usually 6.5 on "runoff".

 

[grapeman]

Iron can only get in at 5 so try to get her down to 5 to get your iron in peace out headband707

I don't think I'd shoot for that. If I was worried about iron, I wouldn't adjust the ph of my soil grow down to 5.0 and then worry about all the other possible lockouts. I'd just use a foliar with iron chelates and leave well enough alone.

that is if I was worried about iron.

 

[DiscoBiscuit]

I like 6.5 to 6.8

 

[coonword]

iv had awesome results with phing my water to 6.4 and when i feed my nute water i ph it to 6.8 my girls seem to love it.