Not sure what's going here.

that1guy1388

that1guy1388

Well-Known Member
Hi everyone! So first time grower here as I'm sure it'll show but tried to do as much research as I could before I started. So I'll give a little info about my set up to hopefully give you a better idea on what's maybe going on. Currently seeing a little burnt corners on one plant and the one side have turn down leaves. From what Ive gathered it could be either nitrogen def or possibly wind burn. I was leaning towards more the wind burn for the conners because they have been getting beat a little with it and I wasn't aware until I saw it so I was going to move them up. Far as the corners haven't a clue. If I can think of anything else to add I'll add it but so far I'm loving it and the experience! All info/comments/concerns and what I could do better are welcomed!

5x9x6 tent
RDWC 8 site 5 gallon buckets with 35 gallon res
pH 5.6
Temp 80 during the day low 70s at night
RH is 32-37% during the day 40-50ish at night. Because the lights go off so light I'm not 100% on the night just what I see before I go to bed. Turns off at 10am and back on at 4am.
18/6
3x Timber Grow Lighs at halt power (215-216watts)
2x Mars Hydro on veg
lights are at 36in away
8in inline fan ac infinity cloundline t8
water temp gets to 73 but no higher, drops at night to around 69-70.
Megacrop (first and only feed was march 10th at 144grams)
Hydroguard (because of water temp and not having a chiller)
current ppm is 855ppm (which I've read is high by some people and some say spot on)
tap water - which is pretty hard comes out at around 300ish.
plants are clones and were put into their homes on march 6th

Clones
3x Candyland
3x Peyote Cookies
1x GG#4
1x Cookie Glue
 

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G

growingforfun

Well-Known Member
For me the plants never looked happy, a lot like yours. Then a rot set into the stem that I have literally seen nothing like in 10 years of growing that killed 4 mature plants.

Its possible it wasnt the nutrients, but as I said I've never seen anything like it in 10 years growing and that's all that changed.

Since your in hydro I'd reccomend any of the liquid chemical nutrients. Theres really a lot of good ones out there.

I run soil so what I use may not work for you.. but I use a 1 part chemical nutrient that's 20-20-20 through most of veg and flower and hit them with a high pk around week 6/7 then back to my 20-20-20
 
that1guy1388

that1guy1388

Well-Known Member
growingforfun said:
For me the plants never looked happy, a lot like yours. Then a rot set into the stem that I have literally seen nothing like in 10 years of growing that killed 4 mature plants.

Its possible it wasnt the nutrients, but as I said I've never seen anything like it in 10 years growing and that's all that changed.

Since your in hydro I'd reccomend any of the liquid chemical nutrients. Theres really a lot of good ones out there.

I run soil so what I use may not work for you.. but I use a 1 part chemical nutrient that's 20-20-20 through most of veg and flower and hit them with a high pk around week 6/7 then back to my 20-20-20
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That's a bummer man! I'll definitely keep a open mind and look around thanks for the info! So do you think the curled tips is due to the nutes or possibly the wind?
 
G

growingforfun

Well-Known Member
that1guy1388 said:
That's a bummer man! I'll definitely keep a open mind and look around thanks for the info! So do you think the curled tips is due to the nutes or possibly the wind?
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Imo it the nutes. I've grown in high wind outdoors and it's not like that. But maybe you'll get it figured out am the nutes will be fine for you. Just saying that's exactly how those nutes made mine look and as soon as I stopped using them things started looking better and within 2 weeks everything was fine.
 
danjac82

danjac82

Well-Known Member
growingforfun said:
Early stages powder mold imo. The mites would be on the bottom of the leaf and you would see little spots on the leaf itself, in the photo the white is raised on top of the leaf.
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I see what you mean. It looks different than mites. I got a million of them hanging out...fucking farting and eating up my leaves as I type this
 
OldMedUser

OldMedUser

Well-Known Member
that1guy1388 said:
Plants seem to love it more the most part just the curled down tups and the tiny edge burn is throwing me off a little as to being new. What do you think?
Click to expand...
What I am pretty sure you got going on there is toxic salts buildup. Your ppm is already too high for plants that size and the condition is made worse by your lower RH. When the RH is low the plants suck up a lot more water and bring excess salts up with it. They build up in the leaves and basically cook them from the inside out. Next step is yellow/brown patches that are now yellowing then thick, crispy, dead leaves.

I would remove half your nutes and top up with RO water to cut the ppm down to around 400-450. Keep an eye on new growth and if you're lucky it'll start coming in healthy then you'll still get a good crop barring other issues.

I've mainly used AN nutes the last 20 years. Just the 3-part with Big Bud and Rhino Skin. I don't waste money on all the other crap I don't need. Any old CalMag will do and Epsom Salts are cheap like borscht. Mostly DWC and soilless using ProMix HP. Very dry here and easy to overload the plants. Took me over a decade to figure it out. :D

If you could get your RH up to 70-75% during veg and early flower it would help to prevent that happening.

VapourPressureDeficitChart.jpg

I found a great spot to download FREE POT BOOKS. I downloaded a grow bible first and got lots more. Books look great and complete like the real ones I have here. No web site but just a page of links. Just right click on what you want and then "Save Link As" to download so they don't open first as some are 50+ megs. They got lots. Enjoy.
 
that1guy1388

that1guy1388

Well-Known Member
OldMedUser said:
What I am pretty sure you got going on there is toxic salts buildup. Your ppm is already too high for plants that size and the condition is made worse by your lower RH. When the RH is low the plants suck up a lot more water and bring excess salts up with it. They build up in the leaves and basically cook them from the inside out. Next step is yellow/brown patches that are now yellowing then thick, crispy, dead leaves.

I would remove half your nutes and top up with RO water to cut the ppm down to around 400-450. Keep an eye on new growth and if you're lucky it'll start coming in healthy then you'll still get a good crop barring other issues.

I've mainly used AN nutes the last 20 years. Just the 3-part with Big Bud and Rhino Skin. I don't waste money on all the other crap I don't need. Any old CalMag will do and Epsom Salts are cheap like borscht. Mostly DWC and soilless using ProMix HP. Very dry here and easy to overload the plants. Took me over a decade to figure it out. :D

If you could get your RH up to 70-75% during veg and early flower it would help to prevent that happening.

View attachment 4316691

I found a great spot to download FREE POT BOOKS. I downloaded a grow bible first and got lots more. Books look great and complete like the real ones I have here. No web site but just a page of links. Just right click on what you want and then "Save Link As" to download so they don't open first as some are 50+ megs. They got lots. Enjoy.
Click to expand...
Thanks for the reply! The salt makes sense since my first go I accidentally used soften water without knowing it was soft water so which would explain the salt build up but this time I did, must have been some left over. I also don’t have a ro system so would you say my best bet would be just to go buy a few gallons of distilled water since they have no ppm? Also as far as RH have any ideas how to raise it that high j would assume I would need a humidifier just anything you would recommend? Sorry about all the ?’s. Still learning.
 
OldMedUser

OldMedUser

Well-Known Member
Even if you grow organically it's salts that feed your plants. Bacteria and fungi in the soil convert organic matter into the same types of salts that come in bottles from the store. A water softener will add to the load but so will hard water that's not softened. All those minerals in tap water are salts. Some salts like sodium chloride aka table salt are harmful to your plants but salts like magnesium sulphate aka Epsom Salts are good for your plants in small doses.

With most grow tents people run the exhaust fan constantly so even if you have a humidifier in there you are not raising the RH more than a few points if the air being drawn in is dry as the moist air is always being exhausted. I have a Temp/RH and speed controllers hooked up to my exhaust fan so it only comes on when the temp or RH get too high. I still can't keep the RH up much so I'm learning to live with the low RH by using much lower ppms in my feeding so the plants don't overload on nutes. For years I thought it was N toxicity but finally clued into it being a humidity problem.

If you can humidify the room the tent is in then the air being drawn into the tent will be at the higher RH and your plants will be happier. Or have the humidifier connected to the same circuit the exhaust fan is on and big enough to put lots of moisture into the incoming air whenever the fan kicks in. For that to work you need a temp/rh controller but they aren't all that expensive if you shop around online. I make my own from a bathroom fan controller and a heat/cool thermostat wired for cooling. Have a wiring diagram if you need it but once you buy all the parts needed you could buy a ready made one for less from what I've seen. Get a combo unit.

Most people have to deal with too high temps and RH but my situation is just the opposite. My main grow room is in an underground concrete bunker which I call the basement. It never gets warmer than around 64F in late summer and right now is only 50.8 but a month ago was 45. In northern Alberta here the air is very dry. I checked an hour ago in the spare bedroom upstairs and the RH is only 24% with the 400W light being on for 6 hours. Temp was 72F. The grow room is almost 50% but I only have a revegging AK47 under an 85W CFL in there atm so it's not warm or moist enough to kick on the exhaust fan so RH stays higher. Big pail of water in there to keep that up too. No need for AC even when I run a 1000W HID in there. The grow room is only 7x9x6.5' in the 10x25' basement and all my air is drawn from the basement area thru filters.

I've been buying my RO water for years. Our house water comes from a dugout on my property and is not fit for human or plant consumption. It's only filtered down to 5 micron with no sterilization and the dugout has all sorts of life in it. Little stickleback fish, lots of frogs, 3 or 4 families of ducks all summer and an occasional muskrat until I shoot the bastards that sneak in there. Was a dozen of them when I bought the place almost 18 years ago. Fed them to the big Siberian Husky girl we used to have. 5 min and the rat was gone and they were big. lol

:peace:
 
Lordhooha

Lordhooha

Well-Known Member
that1guy1388 said:
Thanks for the reply! The salt makes sense since my first go I accidentally used soften water without knowing it was soft water so which would explain the salt build up but this time I did, must have been some left over. I also don’t have a ro system so would you say my best bet would be just to go buy a few gallons of distilled water since they have no ppm? Also as far as RH have any ideas how to raise it that high j would assume I would need a humidifier just anything you would recommend? Sorry about all the ?’s. Still learning.
Click to expand...
NEver use softened water on your plants it’s a sure way to kill them
 
that1guy1388

that1guy1388

Well-Known Member
OldMedUser said:
Even if you grow organically it's salts that feed your plants. Bacteria and fungi in the soil convert organic matter into the same types of salts that come in bottles from the store. A water softener will add to the load but so will hard water that's not softened. All those minerals in tap water are salts. Some salts like sodium chloride aka table salt are harmful to your plants but salts like magnesium sulphate aka Epsom Salts are good for your plants in small doses.

With most grow tents people run the exhaust fan constantly so even if you have a humidifier in there you are not raising the RH more than a few points if the air being drawn in is dry as the moist air is always being exhausted. I have a Temp/RH and speed controllers hooked up to my exhaust fan so it only comes on when the temp or RH get too high. I still can't keep the RH up much so I'm learning to live with the low RH by using much lower ppms in my feeding so the plants don't overload on nutes. For years I thought it was N toxicity but finally clued into it being a humidity problem.

If you can humidify the room the tent is in then the air being drawn into the tent will be at the higher RH and your plants will be happier. Or have the humidifier connected to the same circuit the exhaust fan is on and big enough to put lots of moisture into the incoming air whenever the fan kicks in. For that to work you need a temp/rh controller but they aren't all that expensive if you shop around online. I make my own from a bathroom fan controller and a heat/cool thermostat wired for cooling. Have a wiring diagram if you need it but once you buy all the parts needed you could buy a ready made one for less from what I've seen. Get a combo unit.

Most people have to deal with too high temps and RH but my situation is just the opposite. My main grow room is in an underground concrete bunker which I call the basement. It never gets warmer than around 64F in late summer and right now is only 50.8 but a month ago was 45. In northern Alberta here the air is very dry. I checked an hour ago in the spare bedroom upstairs and the RH is only 24% with the 400W light being on for 6 hours. Temp was 72F. The grow room is almost 50% but I only have a revegging AK47 under an 85W CFL in there atm so it's not warm or moist enough to kick on the exhaust fan so RH stays higher. Big pail of water in there to keep that up too. No need for AC even when I run a 1000W HID in there. The grow room is only 7x9x6.5' in the 10x25' basement and all my air is drawn from the basement area thru filters.

I've been buying my RO water for years. Our house water comes from a dugout on my property and is not fit for human or plant consumption. It's only filtered down to 5 micron with no sterilization and the dugout has all sorts of life in it. Little stickleback fish, lots of frogs, 3 or 4 families of ducks all summer and an occasional muskrat until I shoot the bastards that sneak in there. Was a dozen of them when I bought the place almost 18 years ago. Fed them to the big Siberian Husky girl we used to have. 5 min and the rat was gone and they were big. lol

:peace:
Click to expand...
Damn that’s a killer set up. I live up north so humidity is on and off but usually at night is when it’s at its highest. I don’t use soften water that was by accident I thought the piping in my house only run to the house not all the way to the outside house so I’ve crossed a pipe that comes out of the ground with a value then a hose onto that. Ghetto but it works. Still not sure about the ro system I just don’t like the water waste is all and for a solid ro with less water waste isn’t cheap since I’m running close to 75 gallons or I’d go out and buy my own water.
 
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