Constantly underwatering or something else?

[Buddy12]

Hello,
I could use some help diagnosing what is happening with these plants. I have noticed they are starting to have interveinal chlorsis on leaves and are becoming wavy almost twisting.

In week 2 of bloom
Feed feed water schedule...watering everyday like topping up and all handwatered with hose
In smart pots with pro mix and extra perlite
Soil pH is 6 at drain with 5.8 going in at tank
Gavita lighting set at 750 W about 4 feet away
Room temp is around 78 f
Inline ducting at ceiling that pushes air around and as
Possibly cud start in veg? Some plants in veg stay wetter than others when others are dry when watering

 

[budsnblunts]

How much are you watering them each time? Are you using any cal/mag supplement? I see similar growth to this when I have a week's break from using Epsom salts.

 

[Buddy12]

Yes Cal mag every watering
1 liter of water each 90 gallon tank
Thats too little now that I see it... I was told to water everyday so I'm not giving them a good soak then dry down... I'm used to watering every few days
I had a manganese def on older fan leaves in veg so I adjusted pH but now some r looking mag deficient

 

[popta]

edit: oops, for some reason I thought this was about OVER watering. ignore

 

[Loc Dog]

I suck at reading plants. I find a procedure that works and stick with it. This is the ultimate guide for all problems -

https://www.icmag.com/ic/showthread.php?t=11688

 

[troutman]

Bring the pH a little higher to at least 6.2 for better results in soil.

 

[Buddy12]

Thank you....I will up my pH to 6.2 I lowered it to 5.8 because of manganese def.
I use dehumidifier water and well water with about 960 ppm every feed
I'm bumping up watering to 110 gallons

 

[TanzanianMagic]

Hello,
I could use some help diagnosing what is happening with these plants. I have noticed they are starting to have interveinal chlorsis on leaves and are becoming wavy almost twisting.

In week 2 of bloom

In smart pots with pro mix and extra perlite
Soil pH is 6 at drain with 5.8 going in at tank

Pro-mix is organic soil. Soil pH in organics should be 7.0, not around 6.0, which will lock out mobile nutrients like magnesium. And at the start of flowering the plants need more magnesium anyway. 6.0 pH is good for coco coir with chemical nutrients.

Next time before using the pro-mix, just mix in some magnesium lime (higher pH, magnesium) and some rock phosphate (phosphorus for root growth, as well as calcium and trace elements). Add about 1 tablespoon per gallon of soil of magnesium lime (like Maerl). 2 for rock phosphate. Water with 0.4 EC of bloom food and 0.1 EC of epsom salt after transplanting, as the liquid and quickly available phosphorus stimulates root growth, while the rock phoshpate keeps supplying phosphorus after the available liquid nutrients are used up.

Also, you should check out watering blankets to deliver water to the plants more evenly, and stop any overwatering/underwatering cycles.

 

[Buddy12]

Great thank you. I was using coco and now have switched to pro mix

 

[Teddybrae]

What Troutman said. pH the soil, not the runoff.

Bring the pH a little higher to at least 6.2 for better results in soil.

 

[Buddy12]

What Troutman said. pH the soil, not the runoff.

Ok great. I have adjusted