Nutrient Lockout? Newbie here

Newbie here, unable to figure out what these symptoms could be. To much info out there to compute. Im in a
4x4x7 foot tent
Using 5 gallon smart pots with
Half and half mix of smart frog/ ocean floor.
4 gallons of overal soil
Average temp 75f
5"inline fan, 500 cfm
3 Galaxy hydro 300 watt led grow lights. (Switching to hps, hate these lights).
3x green crack
1x thc snow
They are at week 8 of vegging.
Using ff big bloom, regular feeding cycle
Hydrogen peroxide, 3%
Just started using molasses
Water roughly every four days.
The plants have been showing dark patches of the black mold like substance, holes appearing on leaves and leaves yellowing curling. I've been using 244 fungicide every watering. Planing on switching to 12/12 in a week. Symptoms progressed rapidly the last couple weeks. Back flap of tent fell so no air in tent, also used large feeding of ff bb 1/2 cup to one gallon of watering. Each plant received on gallon of water each watering. Thank you thank you for any help!!

over feeding. remove ill plant parts. try plain water more often. stop the molasses stop the peroxide, stop the fungicide

thank you very much for the response!! Have had lots of conflicting info, including hydro shops around me. Ended up flushing them, cutting off infected parts, unless they were pretty minute. They do look much healthier already. I think viewing them under the led lights they tend to look a lot worse.

Mtsfour said:

thank you very much for the response!! Have had lots of conflicting info, including hydro shops around me. Ended up flushing them, cutting off infected parts, unless they were pretty minute. They do look much healthier already. I think viewing them under the led lights they tend to look a lot worse.

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Calcium manifests as small brown spots. Magnesium causes yellow margins.

Calmag may be your answer.

Looks over fed (N)and what's the peroxide(h202) for beside killing off Benes?

Holes in the leafs? Got insects of some sort?

Leafs look dull and lack luster.

Check plants top to bottom for bugs.

What are the environment details inside the tent? Ventilation good?

Need some myco IMO after you figure out what's wrong.

Molasses is unnecessary to add at this point, no Benes to feed after H202.

Ca:mg is a given unless heavy amended soil or you know which you are short on and you are short a little bit IMO

If it were me, I would give them myco/Kelp/molasses tea then brew up a castings tea then back to feeding them @ 1/2-3/4 dose when they snap back.

Took out the 30x mag and scoured the plants. No critters of any sort no webbing, havent had any critter issues since I've started growing. First time in a 4x4 tent which is in a 12x12 room. I have a 8" oscillating fan which I just heightened to canopy level. It is sucking in air from a port on the tent. I also have a 5" inline fan (500cfm) with a hydro farm 6" carbon filter. Temps drop to the lower 60s and half gone up to upper 70s through out grow do to weather outside. The port flap actually fell closed and has been closed for at least 10/15 days so I figured oxygen was low causing some symptoms. Holes seem to be final detariation from block patches/spotting.

I will post more pics of plants after they are done sleeping. Still 18/6. Cal mag is to add calcium and magnesium or to retract? So i should try teas and cal mag or stick to either or?

Thanks again for all the responses much needed help!

Mtsfour said:

Took out the 30x mag and scoured the plants. No critters of any sort no webbing, havent had any critter issues since I've started growing. First time in a 4x4 tent which is in a 12x12 room. I have a 8" oscillating fan which I just heightened to canopy level. It is sucking in air from a port on the tent. I also have a 5" inline fan (500cfm) with a hydro farm 6" carbon filter. Temps drop to the lower 60s and half gone up to upper 70s through out grow do to weather outside. The port flap actually fell closed and has been closed for at least 10/15 days so I figured oxygen was low causing some symptoms. Holes seem to be final detariation from block patches/spotting.

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Thanks for the info.

Mtsfour said:

I will post more pics of plants after they are done sleeping. Still 18/6. Cal mag is to add calcium and magnesium or to retract? So i should try teas and cal mag or stick to either or?

Thanks again for all the responses much needed help!

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To add/supplement. Ca:mg comes in a combination due to relationship.

You get it zeroed in you can add Epsom salt(mg) or calcium source separate.

Any references or links for a recipe of the myco/kelp/molasses tea and the castings tea?

Cx2H said:

To add/supplement. Ca:mg comes in a combination due to relationship.

You get it zeroed in you can add Epsom salt(mg) or calcium source separate.

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Makes sense.

Mtsfour said:

Any references or links for a recipe of the myco/kelp/molasses tea and the castings tea?

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Check the organics section stickys.
https://www.rollitup.org/f/organics.59/

Mine is @ 5 gallon:
5ozs liquid Kelp
Half scoop of great white
3-5 table spoons of black strap molasses

Dump it all in bubble for atleast 3 days.l look for foam after 2 days or so, not completely needed but I like to see it.

My plants look the best they ever have using teas, I run same strains for years.

Mtsfour said:

Any references or links for a recipe of the myco/kelp/molasses tea and the castings tea?

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My preference is everything to be home brewed or made tbat

Cx2H said:

Check the organics section stickys.
https://www.rollitup.org/f/organics.59/

Mine is @ 5 gallon:
5ozs liquid Kelp
Half scoop of great white
3-5 table spoons of black strap molasses

Dump it all in bubble for atleast 3 days.l look for foam after 2 days or so, not completely needed but I like to see it.

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Thanks, I've read up some on teas, just budget minded at the moment,if cal:mag would still be a good option I will probrobly go with that for now. Until my next go around. Switching out to a 600 watt hps eyehortilux super hps, xxxl magnum 6" reflector and a solis Tec ballast. Moved from west coast to east so it's pretty dry with "help".

Mtsfour said:

My preference is everything to be home brewed or made tbat


Thanks, I've read up some on teas, just budget minded at the moment,if cal:mag would still be a good option I will probrobly go with that for now. Until my next go around. Switching out to a 600 watt hps eyehortilux super hps, xxxl magnum 6" reflector and a solis Tec ballast. Moved from west coast to east so it's pretty dry with "help".

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Yeah start there.

For the future. Worm castings at local garden center starts 5$ for 3 lbs 15$ for 30lbs. Great white is 24ish for a jar. Black strap gallons on ama are 13$ All last a really longgggggggg time.

Good luck and we are here to help when ever.

Mtsfour said:

My preference is everything to be home brewed or made tbat


Thanks, I've read up some on teas, just budget minded at the moment,if cal:mag would still be a good option I will probrobly go with that for now. Until my next go around. Switching out to a 600 watt hps eyehortilux super hps, xxxl magnum 6" reflector and a solis Tec ballast. Moved from west coast to east so it's pretty dry with "help".

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Ewww. Had 2 Solis Tek Matrix ballasts die like a month apart after 18 mos, and had an EFI squad hunting me for a few months.

Cx2H said:

Ewww. Had 2 Solis Tek Matrix ballasts die like a month apart after 18 mos, and had an EFI squad hunting me for a few months.

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Yeah the ballast was used, the bulb and reflector are new. If gets me through a grow or two that's all want and I'll upgrade from there. Just trying to rid my garden of the LED's. Rookie mistake, hate em. EFI squad?

Cx2H said:

Yeah start there.

For the future. Worm castings at local garden center starts 5$ for 3 lbs 15$ for 30lbs. Great white is 24ish for a jar. Black strap gallons on ama are 13$ All last a really longgggggggg time.

Good luck and we are here to help when ever.

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Huge help! Thanks again.

Thanks for all the input, going to add the cal:mag and update later. Plus add some photos after the plants are done sleeping.

Mtsfour said:

Yeah the ballast was used, the bulb and reflector are new. If gets me through a grow or two that's all want and I'll upgrade from there. Just trying to rid my garden of the LED's. Rookie mistake, hate em. EFI squad?

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Yeah my ballasts were knocking out cable service for blocks, they were injecting EFI into a closed system. The FCC website has info on digital grows and the EFI they emit. Switched back to magnetic ballasts, smooth sailing. The problem is the light cord side, needs a filter.

Cx2H said:

Yeah my ballasts were knocking out cable service for blocks, they were injecting EFI into a closed system. The FCC website has info on digital grows and the EFI they emit. Switched back to magnetic ballasts, smooth sailing. The problem is the light cord side, needs a filter.

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Well shit