New to site! Hoping you can help me with plant issue.

I have been working pretty hard getting my grow up and going and it kills me when after all the hard work I get plant issues. Right now the plants are 5 weeks old and I have been fighting pm, never had pm in the 6 years I have grown. I just recently setup a new grow and got 18 ladys from a reliable place, they looked great best I have seen. They started out in a soil less medium and i transferred them into hydro. I didnt see any pm untill the second week. I sprayed with pm wash, high ph water, baking soda water, and now im sulfur burning. I dont think even the sulfur burning is doing anything and now im seeing the leafs turning yellow in spots and drying up only in those spots. Sorry alot to read and im sure you have many questions to rule out things so I will do my best to help...

Undercurrent system
8" net pots
10 Gal totes
PPM - 500
P.H - 6.3 ( I adjust it back to 5.7 and then within a day back to 6.3 where it will sit until I adjust again)
water temp - 66 deg
day room temp - 89 deg
night room temp - 70 deg
Day hum - 45%
Night Hum - 50%
170gal system

Im using current h2o2 nutes veg a and b
adding h2o2 to main bucket every 3 days or so ( 400ml 34% food grade h202)
They seem to be drinking alot of water and some plants are def. stunted, seems to me the roots are not uptaking anything

If I missed anything just ask, Ill be watching for a quick answer and getting pics now

pm??? powder mold??? if so then just use a soap n water spray.. then get a good airflow going. humidity will be in the 45-50's... are they in flower??? what kinda light??? pics deff. needed..

wow thats fast.. good job..

overachiever said:

View attachment 2704787View attachment 2704786View attachment 2704785

Click to expand...

sulfer burners should work. i used a systemic fungicide with myclobutinil in it when i got pm. it kills the fungus thats inside the plant. pm wash, milk, neem... only kill the pm that's on the surface, so it never goes away. you should address whatever it was that caused the pm outbreak in the first place as well- ventilation, air movement, humidity... also getting a hepa filter for your air intake wouldn't hurt (furnace filters work well). hth

They are still in veg. I'm hoping to flower this week but want to take care of whatever this is first. I have very good air flow 6 wall fans and dehumidifier. The light is all brand new induction lighting

I built the room and got the plants to soon because I still needed to hook up the venting, they were in the room for 4 days before I had intake and exhaust hooked up no fresh air besides the door when I oped it. I have a 6" fan blowing in the room with a 10" fan sucking threw a filter blowing hot air out. I'm pretty sure air flow is not a problem now but I can't get rid of the pm it's still growing

1- when you switch soil plant to hydro its very hard
most die in couple weeks but also plenty live
2- tell us about your lighting time , ist 24 hours or 18 /6
3- are the leaves droopy
4- your room temp is very high must not exceed 76 ( maybe this is the main problem and i think its )
5- check the roots , if they are not white get rid from the plants and i think they are brown
in hydro growing your eyes must be always on the roots

I transferred 24 into hydro the first day I got them, all made it fine no problems not even a droop, I have had them or 5 weeks now. Light is on a 18/6. Room temps are high and soon that should be fixed with a 4 ton slips ac. All but 6 of the 18 show problems besides the pm , very stunted roots hardly any development from the roots and kinda brown. I have a chiller for the water and keep the temps at 65-67. They where in the water for 3 days of 80deg before I had the chiller hooked up, again to rushed.

Sry that might be confusing.... I transferred 24 and keep 6 for mothers. 18 went into veg system and now 6 out of the 18 show problems.

overachiever said:

I built the room and got the plants to soon because I still needed to hook up the venting, they were in the room for 4 days before I had intake and exhaust hooked up no fresh air besides the door when I oped it. I have a 6" fan blowing in the room with a 10" fan sucking threw a filter blowing hot air out. I'm pretty sure air flow is not a problem now but I can't get rid of the pm it's still growing

Click to expand...

systemic fungicide will get rid of it. eagle 20 is one of the best ones, but it's not available in alot of areas. myclobutanil is the active ingredient and is used in alot of other fungicides. it stays in the plant for @ 2 weeks after application. theres a few other systemic fungicides that may work as well, but i don't have any personal experience with them. hth

I can get eagle 20 up the street. Ill try that I have also heard good things about it. Really thought sulfur burn would take care of it, I've burned 3 times.

i havn't used a burner myself, several of my friends have used them successfuly, but i dont have any personal exp with them.

I really appreciate your input and will try that. What do you think about the yellowing drying up problem? Ill have to give you guys a tour of my new factory! I've been dying to show it off but know I can't in person anyways.

View attachment 2704804That's them about a week ago

Anyone know what causes that......