Week 5 of flower. Can you please identify the problem?

[rangerrunner]

This is the plants today looking worse.

 

[rangerrunner]

Here are the plants in week 3 today

 

[Bdubs]

What is your HP Mix and perlite ratio? Or how much extra perlite did you add to the soil? I have a feeling you may not have enough soil for cation exchange. Is it possible that you added too much perlite? That would lower your CEC rating, less soil for carrion exchange.

I can explain but basically calmag is positive ions and needs soil to adhere to. You may have a limiting factor of how much the soil can hold.

I’ve been zoned out on this for a minute trying to work up ideas.

 

[rangerrunner]

What is your HP Mix and perlite ratio? Or how much extra perlite did you add to the soil? I have a feeling you may not have enough soil for cation exchange. Is it possible that you added too much perlite? That would lower your CEC rating, less soil for carrion exchange.

I can explain but basically calmag is positive ions and needs soil to adhere to. You may have a limiting factor of how much the soil can hold.

I’ve been zoned out on this for a minute trying to work up ideas.

Never heard of this idea, I mix about 40 percent perlite to 60 percent dirt. Thanks!

 

[Bdubs]

The idea is that the perlite is taking up soil space I think.

So if your HP soil has perlite already at a certain ratio and you plop more perlite in there, you Will lower the CEC of that soil you started with. Which simply means the soils ability to hold nutrients. Organic composted soils have higher CEC ratings, but even with those, too much perlite ratio or any non soil/compost additives to the soil mix reduces that CEC. Wood chips leach nitrogen out of your soil and that’s why a lot of people sift their soils.

 

[rangerrunner]

The idea is that the perlite is taking up soil space I think.

So if your HP soil has perlite already at a certain ratio and you plop more perlite in there, you Will lower the CEC of that soil you started with. Which simply means the soils ability to hold nutrients. Organic composted soils have higher CEC ratings, but even with those, too much perlite ratio or any non soil/compost additives to the soil mix reduces that CEC. Wood chips leach nitrogen out of your soil and that’s why a lot of people sift their soils.

So I just gave my plants 125 gallons of ro. On my second barrel fill up, instead of doing just 10 seconds at a time I did 30 secs and I flushed out pockets of 3000+ppms. I'm fairly certain with me only doing 10 secs at a time it was casuing channeling and not saturating the entire root ball. Which was causing hot spots.

I collect ppms in a little cup and I could move the cup over 2 inches and would have a difference of 2000ppms. So I flushed until I got those sections of the plant down to at least 500ppms all around. My roots have grew twice as fast since I've switched, so I'm just thinking it was creating a bigger mass of a root ball, while not getting saturated enough.

 

[Bdubs]

Way very possible with that feeding style. I runoff soak into a tray every feed. So I get wicking. You don’t have that opportunity. Slower watering is what your doing basically now?

 

[Captspaulding]

Those pics on the last page, def light stress. Way to close with too much output.
The most exposed foliage is the most damaged, majority of the damage is on leaf edges.
The yellowing too.
As well as some taco leaf.

 

[Bdubs]

Like was said, nutrients will determine how much light she can handle. If she has uptake issues she will need less light to stay Healthy. Thats the goal of the convo.

You can chase nutrients all day to accomodate the light. But if the plant is stressing on uptake, light reduction is the fix for a focused indoor grow.

You can attempt to get nutrients right to accommodate the light. But it will take an adjustment and waiting to determine if it helped. Soil is slow man. If you got a lot of perlite in there so you can do daily or every other day waterings, because it gives drought resistance but allows drainage, then you will always be feeding more nutrients overall. More cost to feed. Relying on the soil to do most of the conversion and “work” for food is efficiency and cost effective. The more organic nutrients you can supply with just a little liquid nutrients for a boost, the more robust your flowers will be.

I think all you need is to keep more soil in your soil if you are to use General Hydroponics nutrients.

I use Organicare soil only. Feed GH nutrients every single watering. It has probably the same amount of perlite as your HP mix from the bag. I feed every time. That CEC is needed. More soil to perlite needed.