Caught with my PH down

[Sammy]

31 days into flower I noticed slight curling of top of plants​. Checked pH run off coming back at 5.2 # ouch. Three days of watering in at 6.5 got it back to 5.7 assuming it is a cal_mag def . How long should it take to get run off back to 6.0 6.2.

 

[OzBud]

I water my coco at 6.5 every day and I struggle to get the pH to get to 6.0 and stay there

 

[Sammy]

Do you fight any deficiencies specifically calcium magnesium ? From what I understand 6.2 is the point where the calcium and magnesium can be absorbed into the roots?

 

[NebulaHaze]

I don't see anything that looks like a deficiency, your plants look great! Are you talking about how the edges of a few leaves are flipped up? That usually happens when they plant is hot or getting too much light. You might try raising the light up a few inches to see if that helps Is the temperature under 85°F in there and is there a nice breeze?

 

[Sammy]

Thanks for the compliments nebula. Yeah the temperature is usually stay 79 lots and lots of airflow the runoff being at 5,2 the other night just scared me. Got the pH coming out 6 6.2 my light is an LEC 315 right now about 18 inches only have a couple more I can raise it plant must be very sensitive to light. Thanks again 😏