Need opinions!

Hello everyone, my plants show some problem on the leaves and im not sure what is going on. My feeling is phosphorus defiency but there can be so much more.

Hydromars TSW2000
temp 72-78 day 64-66 night
soil is a mix of coco and sphagnum peat,compost,perlite,organic amendment fertilizer and i use greatwhiteshark mycorrhizae.
In flower for about 1 month
they are in 5 gal smartpot
I give them 2-2.5 L of water each 3-5 days , I used blackstrap molasse that contains the natural sulfur in it.

Note: They had ALOT of problem. I used 6L plastic pot for vegetative stage but i think it was to small and i transplanted the small baby plant too deep in the 6L pot so they got root bound pretty fast and had sign of root rot. I transplanted them in 5 gal smartpot to save them and i think it worked cuz they are still alive. The plants lived 45 days in the 5 gal pot before flowering. The pot is pretty full of root and when i had top soil the root take the place pretty quick. I gave them 1.5 time what gaia green recommend for the bloom amendment 2-8-4 in the 2 week that past.

And the Ph of the top soil is 6.5, i didnt have the chance to check the ph of the root

Your medium mix may be the culprit of most issues. Those who mix coco with other mediums seem to have more problems. Perhaps next grow, stick to one medium so you have one baseline covered...

If you check run off ph and EC levels then you won't need to go by "opinion"...Science is much more reliable.

You want to check and fix your issues as they arise....if ph is low, raise it up.....if EC/ppm is high, flush....if those are in check then move on to environmental factors.... If humidity is to low, raise it up.....if temp is to high, lower it.....

When these things are in check, plants flourish.

No opinions needed.....in fact you know what " opinions " are like right???? LOL!

I would give them some synthetic food for a couple feedings. Looks like the plants are probably eating faster then the microbial life is providing. Give um a nice balanced meal a couple times in a row to get the microbes time to recoup.

Bullet2112 said:

If you check run off ph and EC levels then you won't need to go by "opinion"...Science is much more reliable.

You want to check and fix your issues as they arise....if ph is low, raise it up.....if EC/ppm is high, flush....if those are in check then move on to environmental factors.... If humidity is to low, raise it up.....if temp is to high, lower it.....

When these things are in check, plants flourish.

No opinions needed.....in fact you know what " opinions " are like right???? LOL!

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Sir , with all due respect , you cannot test runoff of compost. Sure you can but its not going to tell you anything you want to know.

getogrow said:

I would give them some synthetic food for a couple feedings. Looks like the plants are probably eating faster then the microbial life is providing. Give um a nice balanced meal a couple times in a row to get the microbes time to recoup.

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Do synthetic food kill microbial life ? I have tiger bloom but i would like to stay all organic. I need to buy a air pump for compost tea.

gazou said:

Do synthetic food kill microbial life ? I have tiger bloom but i would like to stay all organic. I need to buy a air pump for compost tea.

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It can be harmful but its more important that you get them the food they need and worry about your soil later. (the research shows its not near as harmful as we once thought)

getogrow said:

It can be harmful but its more important that you get them the food they need and worry about your soil later. (the research shows its not near as harmful as we once thought)

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I understand that, thank you for the information. I gave them 4 tbsp of gaia green bloom 2-8-4 with a bit of worm casting before seeing your reply. Do you think i should give them synthetic food next watering or flush the plant before giving them the synthetic food in case there is a lockout happening?

Thank you for your time

these are taken today

The plant in the last photo have purple stems, they all have a bit but this one is alot.

No need in flushing at all.....it will hurt more then it will help.
If you have any on hand then sure , give um a dose of veg food but if you dont then the EWC should be enough.

getogrow said:

No need in flushing at all.....it will hurt more then it will help.
If you have any on hand then sure , give um a dose of veg food but if you dont then the EWC should be enough.

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Only have tiger bloom but I think i should see how it goes with the ewc. I should wait 4-7 days before judging anything.

gazou said:

Only have tiger bloom but I think i should see how it goes with the ewc. I should wait 4-7 days before judging anything.

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Yea, wait it out....tiger bloom is not really what you need.... you need the NK out of it. If yuo have grow big then thats perfect.

getogrow said:

Yea, wait it out....tiger bloom is not really what you need.... you need the NK out of it. If yuo have grow big then thats perfect.

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Nk is nitrogen ? And i dont have grow big