Is this light induced? Two random bag seeds growing side by side. Possibly 2 different strains. One has this condition and the other one doesn't. Spider Farmer LED sf2000 in a 2x4x5. Currently 28" above canopy (raised from 24" this morning). Dimmed from 40% to 35% also. Maintaining about 60%RH and 75 degrees. Don't want to starve them of light but don't want to BBQ them either. Am I on the right track here or not? Thanks.
What is causing this leaf issue?
- Thread starter Fishmon
- Start date
Raising temp over 80 not very doable in my situation. Dropped RH to low 50s. Raised light a couple more inches. Left dimmer alone for now. No noticeable change in the edge upcurl after 2 days. Again this is only happening to one of two plants. Suppose maybe I will try increasing intensity as originally suggested and see what results that has. My hesitancy of going this route was due to the fact that most of my searches on the topic indicate a heat or light stress defense mechanism. I will need to become a bit more adept at reading some of these clues as future attempts at growing different strains will likely present basic indicators of cause and effect. Thanks for the input.
myke
Well-Known Member
Thats all you can do,change something and see.Good luck,everybody room is different so keep playing around.
Pics of both showing leaf issue on only one. Thing 2 was always a bit runty compared to thing 1 but seems to be catching up and maybe surpassing. Topped both a week ago. Both broke ground on 10/28. Both have gotten two 1/2 strength feedings of fox farm big bloom over the last two weeks. Thanks
myke
Well-Known Member
Plant looks good. I don’t think the spectrum is that good when dimmed to 35%?? Small tent so environmental must be hard to keep consistent? Over water and root problems can also show like that. By I think it’s really nothing and it will grow out. Young plant maybe a little fussy.
I have a small tower fan that was blowing on low speed along the tent wall for circulation thought maybe wind burn although it wasn't directed on the plants. I have access to an IR temp gun I could check tomorrow and relay findings. Ventilation is ac infinity at half speed so about 100 cfm. So roughly 2 air changes per minute. Not sure if I mentioned above but the tent is 2x4x5. I did swap places with the plants to see if the unaffected one would show symptoms. Thanks.
Checked leaf temps. Both plants showing 69.5. Tent is about 73.5 (thermometer/hygrometer above and to one side of the the light near exhaust duct). Using cool mist humidifier in the tent and wondered if using tap water can land chlorine on the leaves so using filtered now. Supposedly it strips out chlorine but I let it sit out for good measure. A second humidifier (evaporative in the room with the tent) just found the media crusty after only a month and not absorbing water so my RH dropped to 46 today. Apparently I will need to maintain the media on a weekly or bi-weekly basis. House RH is in the low 30s now but the grow room is small and RH has been quite manageable at least until the evaporative took a dump. Thanks.
go go kid
Well-Known Member
to get rid of chlorine in the water, boil it up first and leave it for 24 hrs, i believe that rids chlorine and chloramines. thats what you do to drinking water
speedwell68
Well-Known Member
To get rid of Chlorine you just need to vent the container to air for a day or so.
go go kid
Well-Known Member
can you use sodium metabisulphite used in steralizing wine and beer making equipment, they were saying 1 tablet would do 50 galons of drinking water, minimal sodium content in the water at that dose.
i ask because it may have been for river water and dont want to confuse the readers
i ask because it may have been for river water and dont want to confuse the readers
speedwell68
Well-Known Member
Sodium Metabisulphite is used in the brewing and pub trade as a steriliser. It is what they clean the lines in a pub with, it is often called Campden Tablets. It is perfectly safe for anything.
hotrodharley
Well-Known Member
"Boiling speeds up the evaporation of Chloramine from tap water significantly, but it still remains a relatively slow process. You’ll need to boil 10 gallons of water for at least an hour to completely remove 1 mg/L (milligram per Liter) of Chloramine. Therefore it’s not feasible to try and boil Chloramine out of larger volumes of tap water."
Good luck!