Brand new to this, please help with curling leaves

[R1Joker]

Hi, this is my first post and my first grow. I am having a blast with this amazing process and have much to learn. I jumped right in with 2x4 tent, HLG 350R led light, and a 2-site fallponic RDWC system. I am using GH flora series with Cal-mag in R/O water. Northern Lights fem seeds sprouted in rapid rooters on feb20 and 21. I put them directly into the tent. Light 24” at 30% 250PPFD, Air 64 degrees, Humidity 40%, Water 65 degrees, PPM (Hannah500) 190, ph 5.8. I thought I had the water level just kissing the bottom of the net pots bubbles popping on my hydroton Happy Happy! 2 days later I found the roots on both plants 3” to 4” below the net pots and the water level on my smaller later sprouting plant about an inch too high, drowning my poor little seedling! From the first true leaves till now (25 days) that plant seems stressed with slow growth and leaves canoeing while the other plant is growing great. I corrected the water level and added a humidifier currently running at 60%. I slowly raised ppm to a current 563 with a steady ph of 5.7 to 6.0. Lights lowered to 20” and turned up to 490 PPFD. Tent temp stays between 65 and 70 degrees. I think the roots on both plants look good. Sorry if this is tmi, but I am not sure what is going on or what to do if anything? Any thoughts or advice would be much appreciated!

 

[Failmore]

65-70 is ice cold for those plants. Need 80s for led for the best growth.

I would work on that first.

Once you get the temp tent up your water temp will go up. So you will then need to solve the water temp issues.

Need a chiller or gotta go sterile. Bennies work for some but never worked for me.

Everything else looks OK so I would bet it is low temps.

 

[Johiem]

First let me commend you for all of the info given, or makes it so that your first response isn't a cry for more details. @Failmore is right your girls are just short of going dormant. Pump some warm air in or get a tiny heater.

 

[hydroScript.js]

Yea I had the same dilemma ..... I'm on my first grow and thought it would be cheaper to keep the air cool than the water....In hindsight, I wish I would have just bought a chiller.....I've noticed WAYYY better growth from my LED's when I had the temp closer to 80 I plan to drop it into the 70's toward the end of flower but yea they will grow at 65...they just will grow better at 75-80...there are plenty of places that marijuana grows perfectly fine at 65 degrees in nature...but since we are growing indoors where we can be better than nature..lets do that!

 

[hydroScript.js]

As Far as going sterile or using bennies... (disclaimer I am on my first grow, so I'm just talking about things I know about nature and what I've read that makes sense) I went the bennies and combination proper temperature route....It just makes sense that plants were evolved with microbes have microbes...now with that being said...from what I understand liquid nutrients are delivered in such a form that plants can readily uptake all the nutrients available to them...unlike with organic things that need to be broken down....so there's a solid argument against it....IMO a healthy system with good microbes and proper temperature might be better than trying to go sterile and experiment with higher temperatures...but @Failmore has way more growing experience then me....

 

[Failmore]

As Far as going sterile or using bennies... (disclaimer I am on my first grow, so I'm just talking about things I know about nature and what I've read that makes sense) I went the bennies and combination proper temperature route....It just makes sense that plants were evolved with microbes have microbes...now with that being said...from what I understand liquid nutrients are delivered in such a form that plants can readily uptake all the nutrients available to them...unlike with organic things that need to be broken down....so there's a solid argument against it....IMO a healthy system with good microbes and proper temperature might be better than trying to go sterile and experiment with higher temperatures...but @Failmore has way more growing experience then me....

In hydro you don't feed the bennies to feed the plant. The bennies are there just to keep the bad stuff away. When you have a colony of beneficial bacteria they do not allow the bad bacteria to grow. You still need to feed hydroponic nutes to the plant.

 

[hydroScript.js]

In hydro you don't feed the bennies to feed the plant. The bennies are there just to keep the bad stuff away. When you have a colony of beneficial bacteria they do not allow the bad bacteria to grow. You still need to feed hydroponic nutes to the plant.

If i said that wrong that's what i meant

 

[Failmore]

If i said that wrong that's what i meant

Gotcha

 

[hydroScript.js]

This is probably hella wrong but what I do is I cool my entire garden down twice a day for an hour....keep it 65 degrees for about 2 hours drop the water temp from 75-65 then I let it stay at 80 for the rest of the day....I'm SURE this is less than IDEAL...but I didn't want to keep sticking bottles into my rez...and I haven't bought a chiller just using what I already have....how is your garden 65 degrees is it outside? It should be warmer than that with the lights on...I find my tent gets about 7 degrees warmer than the air temperature of the room give or take... i corrected it after taking my room temp

 

[Failmore]

This is probably hella wrong but what I do is I cool my entire garden down twice a day for an hour....keep it 65 degrees for about 2 hours drop the water temp from 75-65 then I let it stay at 80 for the rest of the day....I'm SURE this is less than IDEAL...but I didn't want to keep sticking bottles into my rez...and I haven't bought a chiller just using what I already have....how is your garden 65 degrees is it outside? It should be warmer than that with the lights on...I find my tent gets about 15 degrees warmer than the air temperature of the room give or take...

With my hps bulb vent fan on 100% I'm about 10deg F hotter inside than my room temp.

The bottle thing is why I stopped doing dwc. I was not able to keep temps down when working a 12hour shift. If doing that works for you. Then keep doing it.

Everybody has a slightly different environment so we gotta find what works for our individual situations.

 

[Hydrahail]

Do you rez change weekly?

 

[hydroScript.js]

With my hps bulb vent fan on 100% I'm about 10deg F hotter inside than my room temp.

The bottle thing is why I stopped doing dwc. I was not able to keep temps down when working a 12hour shift. If doing that works for you. Then keep doing it.

Everybody has a slightly different environment so we gotta find what works for our individual situations.

It's only because I have that AC that i'm able to do that....I'm honestly not seeing a huge benefit to hydro...ATM...it seems slightly faster BUT all the extra shit that goes along with it......Now if i had a "smarter" setup....a central rez....a cooler...maybe two large bens with 4 3 inch net pots...this way i'd only have to check one location and adjust ph....I would have to worry about temperature...then I bet this shit would be fun....right now it feels like a chour compared to my other girls in dirt....tbh

 

[hydroScript.js]

Do you rez change weekly?

who me? No once I got a good microbial activity which I judged by my PH remaining mostly stable with just slight increases per day....I kept the same water for 2 weeks during veg and then changed it do a slightly different one yesterday when i switched lighting to 12-12

 

[Failmore]

It's only because I have that AC that i'm able to do that....I'm honestly not seeing a huge benefit to hydro...ATM...it seems slightly faster BUT all the extra shit that goes along with it......Now if i had a "smarter" setup....a central rez....a cooler...maybe two large bens with 4 3 inch net pots...this way i'd only have to check one location and adjust ph....I would have to worry about temperature...then I bet this shit would be fun....right now it feels like a chour compared to my other girls in dirt....tbh

Yeah if set up correct hydro should be easy. I only need to do work every 2 or 3 days atm. Fill a bucket with 4 gallons. Mix nutes in. Poor into 10 gallon res. Other than that I don't need to do anything.

 

[Johiem]

Im like script up there but to me it isn't a chore. It satisfies my, as it was diagnosed, True Obsessives Disorder(T.O.D.). If I weren't in my tents, daily(2 or 3 times), I'd drop into a thought hole and get stuck. Valium was trying to help, but it sucks. So into the tent.

 

[Failmore]

Thats how it goes on your first or 2nd grow. Then after that it is kinda been there done that seen it all. Nothing new to see here.

Until you get deep into flower....then it is back into the tent every few hours to drool

 

[R1Joker]

65-70 is ice cold for those plants. Need 80s for led for the best growth.

I would work on that first.

Once you get the temp tent up your water temp will go up. So you will then need to solve the water temp issues.

Need a chiller or gotta go sterile. Bennies work for some but never worked for me.

Everything else looks OK so I would bet it is low temps.

With the lights at about 50% and the ventilation fan at about 30% my tent is only running a few degrees warmer than the air outside. Looking back it seems my best groth was on the warmest days. Never considered that I might need to heat my tent. I am looking at how to best do this now. Also , I'll learning all I can about going sterile and chillers.
Thank you

 

[rkymtnman]

in pic 3-10, does light get into those holes in the netpot not filled in by the hydroton? if so, fix that.

 

[R1Joker]

First let me commend you for all of the info given, or makes it so that your first response isn't a cry for more details. @Failmore is right your girls are just short of going dormant. Pump some warm air in or get a tiny heater.

Thanks, I've been reading a lot of posts and am blown away by how helpful everyone is. It's easy to see you need correct info to give correct advice. I look forward to being qualified to give back!
Thanks! looking for heat now!

 

[R1Joker]

in pic 3-10, does light get into those holes in the netpot not filled in by the hydroton? if so, fix that.

Good eye! Yes I topped off the hydroton a few days later. Rookie mistake