RDWC droopy leafs using RO Water

[Michaelmng]

I have 4 current culture systems in week 3 of veg they were doing good but now the leaves look droopy Roots have grown into the water however I'm not sure if I should lower water levels further away from the roots. My environment is pretty dialed in 65% RH 80 degrees in the room. Chillers are set to 66 degrees and usually land around 68 degrees, im using culture Solutions by Current Culture ppms are at 330ppm PAR is at 220umols I'm stumped I moved away from Coco and lugging bags I'm here to stay with RDWC definitely fascinated and what to be successful with This style of growing.

 

[Aqua Man]

You have an IR temp gun?

Please list all your equipment including models.

66 is to dam cold for 1 but many things need adjusted here.

List of all nutrients and additives and exactly how you nix and add them.

Ph and oh drift (the change over a 24gr period.

Live or sterile?

 

[Michaelmng]

Leaf temps are between 77-79° PH 6.3 consistent for a day or two then it's at 6.5 CC says that's OK but I end up adding PH down to bring it back. Not sure I here so many different things about PH and ppl with dosers.
When I mix-As system is refilling, but as of lately I have taken a measurement of how much water is in the system then add nutrients according to the amount of gallons following the CC regement for 48 gallons. And i got that info from CC nutrients calculator.
Room is 12'x 16'
Dehumidifier Quest 110
Ideal Air humidifier @ 65%
Ac Fujitsu 24k btu
2 water chillers 1/4hp in room one is a eco plus & the other is active aqua
2 dimlux 1000w & 2 rpd8 LEDs
100gal res In Room and too 50g top off tanks
Currently in week 3 of veg

You have an IR temp gun?

Please list all your equipment including models.

66 is to dam cold for 1 but many things need adjusted here.

List of all nutrients and additives and exactly how you nix and add them.

Ph and oh drift (the change over a 24gr period.

Live or sterile?

Leaf temps are between 77-79°, running sterile PH 6.3 consistent for a day or two then it's at 6.5 CC says that's OK but I end up adding PH down to bring it back. Not sure I here so many different things about PH and ppl with dosers.
When I mix-As system is refilling, but as of lately I have taken a measurement of how much water is in the system then add nutrients according to the amount of gallons following the CC regement for 48 gallons. And i got that info from CC nutrients calculator.
Room is 12'x 16'
Dehumidifier Quest 110
Ideal Air humidifier @ 65%
Ac Fujitsu 24k btu
2 water chillers 1/4hp in room one is a eco plus & the other is active aqua
2 dimlux 1000w & 2 rpd8 LEDs
100gal res In Room and too 50g top off tanks
Currently in week 3 of veg

 

[Aqua Man]

Drop PH to 5.6. Let raise to 6.0 only then back down to 5.6. Your PH drift ideally should be about 0.2 in 24 hrs.

Lower room temps to reach 75 to 77f leaf temperature maximum. They are showing heat stress.

Increase water temp to 70f

Drop humidity to 55-60%

Reduce the light intil you get these parameters inline. Light drives growth and demands so if you dont its only going to get worse faster.

Exactly which nutrients and additives are you using? How are you mixing them and PHing bith when mixing and maintaining

 

[Michaelmng]

Will follow your instructions immediately.
Nutrients Cultured Solutions by Current Culture I fill the 7 bucket system see how many gallons it takes to get to desired water level then add uc roots, cal mag, Veg A&B that'll PH usually will be accurate according to Current Culture recommendations @ 6.3PH - instead I'll now lower PH to 5.6 and let it swing to 6.0, And turn down lights to reduce leaf temps.
1. My question is should it matter if I have LED lights in the room with the lower room Temps I thought that would be of concern or that's not really a big deal when running LEDs
2. Do you prefer sterile or Beni's
Thanks again!

 

[Aqua Man]

Will follow your instructions immediately.
Nutrients Cultured Solutions by Current Culture I fill the 7 bucket system see how many gallons it takes to get to desired water level then add uc roots, cal mag, Veg A&B that'll PH usually will be accurate according to Current Culture recommendations @ 6.3PH - instead I'll now lower PH to 5.6 and let it swing to 6.0, And turn down lights to reduce leaf temps.
1. My question is should it matter if I have LED lights in the room with the lower room Temps I thought that would be of concern or that's not really a big deal when running LEDs
2. Do you prefer sterile or Beni's
Thanks again!

I run live… if you want to i would recommend defgaurd. I think that roots you should be dosing every 3days?

Room temps don’t matter just the leaf and plant temps. Not sure how you have the lights setup but the 1000s are likely the reason for the leaf temps so if those can be backed off or turned off for bow that will prob solve that issue

 

[Aqua Man]

Will follow your instructions immediately.
Nutrients Cultured Solutions by Current Culture I fill the 7 bucket system see how many gallons it takes to get to desired water level then add uc roots, cal mag, Veg A&B that'll PH usually will be accurate according to Current Culture recommendations @ 6.3PH - instead I'll now lower PH to 5.6 and let it swing to 6.0, And turn down lights to reduce leaf temps.
1. My question is should it matter if I have LED lights in the room with the lower room Temps I thought that would be of concern or that's not really a big deal when running LEDs
2. Do you prefer sterile or Beni's
Thanks again!

So LED lacks IR in comparison to HPS or HID in general. Its the IR spectrum that warns the leaf plus the radiant heat from the HID lighting because its leas efficient and the byproduct of that is heat.

LED generally need a warmer room temp to keep plant temps in the ideal range of 75-77f because if this lack if radiant heat and IR warming.

In the end the ONLY thing that matters is your plant temps. This can be manipulated by wind, light, humidity and a few others.

So i said drop the humidity riggt. This is to increase transpiration and thus evaporative cooling helping bring your leaf temps down.

Lowing light will reduce the demands.

Warner water temp of 70-72f will greatly soeed the metabolism of the plants…. Increased transpiration and growth.

Im off for a few hrs but will check back later

 

[Michaelmng]

So LED lacks IR in comparison to HPS or HID in general. Its the IR spectrum that warns the leaf plus the radiant heat from the HID lighting because its leas efficient and the byproduct of that is heat.

LED generally need a warmer room temp to keep plant temps in the ideal range of 75-77f because if this lack if radiant heat and IR warming.

In the end the ONLY thing that matters is your plant temps. This can be manipulated by wind, light, humidity and a few others.

So i said drop the humidity riggt. This is to increase transpiration and thus evaporative cooling helping bring your leaf temps down.

Lowing light will reduce the demands.

Warner water temp of 70-72f will greatly soeed the metabolism of the plants…. Increased transpiration and growth.

Im off for a few hrs but will check back later

After imidiate changes mad to environment and water temps, & PH.

The PH climbed up from 5.6 PH to 5.8-9. And one system the ppms also climbed from 330ppms to 340ppm

How long does it typically take for the signs if heat stress to go away.

Thanks Aquaman

 

[Aqua Man]

After imidiate changes mad to environment and water temps, & PH.

The PH climbed up from 5.6 PH to 5.8-9. And one system the ppms also climbed from 330ppms to 340ppm

How long does it typically take for the signs if heat stress to go away.

Thanks Aquaman

Any damage to leaves wont get better but pay attention to the new growth on the upper part of growing tips. I suggest those being no higher than 78f.

A day or 2 is adequate to be able to see a difference if you know what your looking for

 

[Michaelmng]

Any damage to leaves wont get better but pay attention to the new growth on the upper part of growing tips. I suggest those being no higher than 78f.

A day or 2 is adequate to be able to see a difference if you know what your looking for

After plants start growing do I increase humidity or should I leave it at 50%

 

[Aqua Man]

After plants start growing do I increase humidity or should I leave it at 50%

50% is a pretty safe place to stay imo

 

[Aqua Man]

Hiw are they doing now? Seeing improvements yet?

 

[Michaelmng]

To be honest at the 5.6ph I seen about a 1.5" of growth the room is pretty sealed and sit around 700ppm co2 without generater on. However I think because I have the equipment at hand I wanted to exercise the rh at 70%. And everyone I ask is saying they keep there Ph at 6.0 in veg and 5.8 in flower. It seems there is many different ways to grow RDWC. I have a different space with no ac Water chilled at 69° and 40-44% rh 5.8pH and they are thriving it seems like many variables and I'm uncertain. The goal is to scale to a commercial space. Within the next year but I want to do it with rdwc and master the masters way with current culture systems. You think I'm being misled and should just maintain 5.6 swing to 6.0 and I'll get maximum yield running sterile? Thanks again for the advice

 

[Aqua Man]

I would not say misled but here is 2 weeks growth when i ran my hydro. Pure veg this is not stretch and was looked after by my daughter while i was away.

 

[Michaelmng]

Damn that's some good growth that's what I'm looking for,
1.are you exchanging air or is it a sealed environment?
2.Do you think I'm under powered with air stones I'm running 40 liters per min
3. Do you remember the ppms you where at during this stage

 

[Aqua Man]

Damn that's some good growth that's what I'm looking for,
1.are you exchanging air or is it a sealed environment?
2.Do you think I'm under powered with air stones I'm running 40 liters per min
3. Do you remember the ppms you where at during this stage

Never more than about 600ppm.

Sealed room with co2.

Airstones need to be matched to the pump if you can link them and the pump with how many i can calculate it for you. What matters is the surface agitation not the volume of air like most ppl think

 

[Michaelmng]

For 6 8gal buckets it

Blue Diamond Pumps Blue Diamond ET 40 Septic or Pond Linear Diaphragm Air Pump https://www.amazon.com/dp/B018WM1NMQ/ref=cm_sw_r_apan_i_F0AVW7YPKQJP1BDESABT?_encoding=UTF8&psc=

Airstones
AQUANEAT Air Stone, 4 X 2 Inch Large Air Stone Cylinder, Aerator Bubble Diffuser, Air Pump Accessories for Hydroponic Growing System, Pond Circulation, Aquarium Fish Tank (10 Pack) https://www.amazon.com/dp/B07BS56CXK/ref=cm_sw_r_apan_i_6K28ZS4YEAKA94KM9KPT

 

[Aqua Man]

For 6 8gal buckets it

Blue Diamond Pumps Blue Diamond ET 40 Septic or Pond Linear Diaphragm Air Pump https://www.amazon.com/dp/B018WM1NMQ/ref=cm_sw_r_apan_i_F0AVW7YPKQJP1BDESABT?_encoding=UTF8&psc=

Airstones
AQUANEAT Air Stone, 4 X 2 Inch Large Air Stone Cylinder, Aerator Bubble Diffuser, Air Pump Accessories for Hydroponic Growing System, Pond Circulation, Aquarium Fish Tank (10 Pack) https://www.amazon.com/dp/B07BS56CXK/ref=cm_sw_r_apan_i_6K28ZS4YEAKA94KM9KPT

3-4 of those stones will max that air pump. They need around 10lpm

 

[Michaelmng]

So a 80lpm would be better or do I buy smaller stones

 

[Aqua Man]

So a 80lpm would be better or do I buy smaller stones

Well its surface area agitation so whichever agitates the surface best. In your case id just buy smaller stones and go 1 per site