Threatco - Little black circles - Flowering day 22

[threatco]

Resivoir temps got down to 13c. Going to get an aquarium heater. Any suggestions?

 

[threatco]

Girls woke up and before first flood I check PPM was 700, PH 6.3, temp 17c.

Took out 4 gallons of reservoir water. Replaced that with hot tap water. Adjusted PH. Got it to 567 ppm, 5.56 ph, 23.8 c.

Turned the light intensity back up to 60w per square foot (260 + 260 + QB dialed down to 128) / 10.8 square feet at 24 inches.

Will watch for new damage and dial back light or up ppm if needed.

 

[threatco]

Took off a handful of the sickest leaves that were blocking bud sites. I think the progress of the problem has mostly stopped. Will be keeping an eye on it.

Temp has come up in general, so the water temp has been 19-21c without a heater. PH usually at 6.2 when they wake up.

Been keeping the 60w/ft^2, but I had left one of the lights on for 24 hours about 3 days ago, so been slowly getting back in the cycle by going 8h light, 12 h dark every other day till I get back on track. Note to self, make sure any new lights you add to a flowering tent is also plugged into a timer.

I will aim for 800 ppm when I give it fresh water tomorrow.

The system is going through about 2-3 gallons of water a day in this 1m^2 space.

Any diagnosis or opinions welcome.

 

[Aqua Man]

Resivoir temps got down to 13c. Going to get an aquarium heater. Any suggestions?

If money is not an issue I like colbalt. If not eheim or fluvial. Make sure the temps settings are low enough. I know colbalt is 66f and up. How many gal?

 

[Aqua Man]

Took off a handful of the sickest leaves that were blocking bud sites. I think the progress of the problem has mostly stopped. Will be keeping an eye on it.

Temp has come up in general, so the water temp has been 19-21c without a heater. PH usually at 6.2 when they wake up.

Been keeping the 60w/ft^2, but I had left one of the lights on for 24 hours about 3 days ago, so been slowly getting back in the cycle by going 8h light, 12 h dark every other day till I get back on track. Note to self, make sure any new lights you add to a flowering tent is also plugged into a timer.

I will aim for 800 ppm when I give it fresh water tomorrow.

The system is going through about 2-3 gallons of water a day in this 1m^2 space.

Any diagnosis or opinions welcome.

It's looking like your at the point it's now just about consistency. Some water temp adjustment and just keep an eye out. Sounds like your getting it dialed in now.

 

[threatco]

If money is not an issue I like colbalt. If not eheim or fluvial. Make sure the temps settings are low enough. I know colbalt is 66f and up. How many gal?

40 gal in new one and 20 in the other.

Those Cobalt ones are a lot more eh? Do you use that one? How long has it lasted for you?

 

[Aqua Man]

40 gal in new one and 20 in the other.

Those Cobalt ones are a lot more eh? Do you use that one? How long has it lasted for you?

6 yrs and counting. I mean for the price in hydro I would prob just go eheim or fluvial. I didn't mind paying more because I have cooked fish before when other have failed. Not so much of an issue in hydro.

 

[threatco]

6 yrs and counting. I mean for the price in hydro I would prob just go eheim or fluvial. I didn't mind paying more because I have cooked fish before when other have failed. Not so much of an issue in hydro.

I will go with that. Thanks!

 

[threatco]

Did a big maintenance day. Took the totes out of the tent so I could clean everything up.

Defoliated about 20% of fan leaves equally from top and bottom.

Flushed the clay thoroughly from the top with 12 gals per tote of ph and temp corrected 35 ppm tap water to clear out built up salts.

Added scrog net back to support some fat buds. My hands got SO sticky pulling the buds into place.

Sanitized the resivoir.

Mixed new nutrient solution. 5.5 ph 850 ppm 80% strength micro bloom and Magnifical.

Bit of a heat wave here so been keeping the humidity in the target range to address VPD.

I have to say I have never had such old leaves still looking so great this late into the grow. Probably my most successful one yet.

 

[Aqua Man]

Did a big maintenance day. Took the totes out of the tent so I could clean everything up.

Defoliated about 20% of fan leaves equally from top and bottom.

Flushed the clay thoroughly from the top with 12 gals per tote of ph and temp corrected 35 ppm tap water to clear out built up salts.

Added scrog net back to support some fat buds. My hands got SO sticky pulling the buds into place.

Sanitized the resivoir.

Mixed new nutrient solution. 5.5 ph 850 ppm 80% strength micro bloom and Magnifical.

Bit of a heat wave here so been keeping the humidity in the target range to address VPD.

I have to say I have never had such old leaves still looking so great this late into the grow. Probably my most successful one yet.

looking good

 

[threatco]

20 hours since defoliation.

Heat wave today. 31 c peak temps. I think the exhaust was lowering rh too much. 70 rh in the home but 54 in the tent. Put my humidifier in there and turned off the king plus for the last 8 hours of today's light cycle.

Ph brought down from 6.3 to 5.5 first thing. Ppm went down slightly 850 to 840. Maybe 3 gallons drank in 20 hours.

Main concern is this leaf curl on 10% of my fans. The NL#5xhaxe plants all equally impacted. The Ice Cool, the darker shorter more indica looking ones in the front, are not impacted at all. Pic of it is inserted first. Last 3 are nl5xhaze

I'm guessing too much transpiration? Is that what this leaf tells you? New shape it's never done before. Or perhaps just general stress from being fucked with so much yesterday.

Thoughts @Aqua Man ?

 

[Aqua Man]

Heat and lower humidity they gonna drink a lot more. May wanna drop the ppm a bit.

 

[threatco]

Took your advice, and displaced enough solution with fresh water to get ppm to 700 on the nose. I may have to cut back the initial dose from 80% to 70% to keep the ppm from being too high. Or should I reduce Magnifical usage at any point if the signs of calcium deficiency stay away?


The humidifier in there should correct RH now to the high room temp.

I do have a temp gun. Would knowing the leaf temp vs tent air temp be helpful?

 

[Aqua Man]

Took your advice, and displaced enough solution with fresh water to get ppm to 700 on the nose. I may have to cut back the initial dose from 80% to 70% to keep the ppm from being too high. Or should I reduce Magnifical usage at any point if the signs of calcium deficiency stay away?


The humidifier in there should correct RH now to the high room temp.

I do have a temp gun. Would knowing the leaf temp vs tent air temp be helpful?

Absolutely helpful. Did you read the thread I made on VPD?

 

[Aqua Man]

Wanna get the leaf temps 75-77 without CO2

 

[threatco]

Wanna get the leaf temps 75-77 without CO2

Yep, I did have a read on it.

My leaf temps tend to be 2c less than the air. But throughout a grow my temps may run 15c in winter or 30c in summer. So for me, it's easier to control humidity than temp.

I assume based on the below chart, I can just adjust the humidity based on the temp. It would be more ideal if I could run the perfect temp too, but that is just not totally doable right now.

On the plus side, I have been running this strain for a couple of years now and trust it's resistance to mold from humidity.

I was wondering if knowing that the leaf surface temp was no longer 2c less, would that help confirm the heat/over perspiration diagnoses?

I assume that stress from my defoliation yesterday is equally suspect?

 

[Aqua Man]

Yep, I did have a read on it.

My leaf temps tend to be 2c less than the air. But throughout a grow my temps may run 15c in winter or 30c in summer. So for me, it's easier to control humidity than temp.

I assume based on the below chart, I can just adjust the humidity based on the temp. It would be more ideal if I could run the perfect temp too, but that is just not totally doable right now.

On the plus side, I have been running this strain for a couple of years now and trust it's resistance to mold from humidity.

I was wondering if knowing that the leaf surface temp was no longer 2c less, would that help confirm the heat/over perspiration diagnoses?

View attachment 979072

Yup best to write em down daily then when something changes it goes a long way to figuring things out. Just a fan can make a difference.