Cal mag deficiency in rdwc

White.Black said:

Nutes are generic sort of clone of general hydroponics, and cal mag is also locally made.

Temp is 25c, humidity 50%, lights are led mars hydro, water is local tap water.

I did not mention this because im in Thailand, and all products i use are local to Th...but having said that, this is just happenibg in rdwc system, not in dwc in another tent where i only have 1 plant. That one is showing no signs of calmag deficiency.

My instinct is saying that i should increase cal mag supplement in rdwc because there are 4 plants sharing the same nute solution. Im somwhat afraid that its not calmag that is the primary cause of the problem, and if i do this, i will make the issue even worse.

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White.Black said:

I don't think it's bugs. This is inside the airconditioned room in grow tents, of course it still can be...but very unlikely. It's nutrient imbalance of some sort. But it's strange because it does not happen in DWC where I have one plant, it happens in RDWC where I have 4 plants sharing the same nutrient solution. They are not clones.

So... to be clear. I have DWC in one tent with 1 plant, and RDWC in another tent, with 4 plants sharing the same nutrient solution. The problem is in the RDWC tent, not the DWC tent...and I'm feeding them exactly the same.

In RDWC, I have 3 different plants. Northern lights one, 2 white widow and 1 royal runtz. Royal Runtz seem to be in best shape by far, while northern lights is basically dead.

I'm adding a quarter to a half of what's specified on the label NutraGrow, NutraMicro, NutraBloom (the GH clone locally made in Th). You can see that this is named similar to GH, FloraGro, FloraMicro and FloraBloom.

So, last top up was:
40 liters of water, or 10 gallons
40ml of NutraMicro
70ml of NutraBloom
20ml of Cal-Mag
Squirted some hydroguard in.

There was already about 20 to 30 liters of water in there..so total is 70 liters, or 19 gallons.

I run water chillers, and water is kept at 20c. Hydroguard is used as well to maintain root health.
Rooms are air conditioned, so heat and humidity are not a problem.

Here are more pictures...

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Wastei said:

"Squirted some Hydroguard?" Lol! I think this is your main problem, Hydroguards is not very effective as a preventative from the get go, it's heavily diluted and if it's not stored correctly it may go bad. If you don't dose it accurately it may even be contra productive. I've seen people experience root rot with using to much Hydroguard.

Depending on what "Calmag" you use I would second it sounding like a way to high dosage. You should only add back the buffer and you should not need max dosage to achieve that! You're new and your plants look way overfed.

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Cal-Mag (Iron Chelate) - 500cc , 1000cc , 3000cc แคล-แมก (เหล็กคีเลต) ขนาด 500 ซีซี , 1000 ซีซี และ 3000 ซีซี | Lazada.co.th

แคลเซียม chalkcap 1000: เทคโนโลยีการส่งผ่าน Rf45มีการสูญเสียต่ําเป็นพิเศษและเทียบเท่ากับอัตราการรีเฟรชขั้นต่ํา60Hz ไฮโดรเจนเปอร์ออกไซด์: อุณหภูมิในการทํางาน: -40 C ถึง40 C. co2 bag สำหรับต้นไม้: ทําให้คุณใกล้ชิดกับหน้าต่างมากขึ้นกว่าที่เคย โพแทสเซียม ไซยาไนด์: เครื่องส่งสัญญาณ Fm...

www.lazada.co.th

bubblescrogs said:

I've seen similar from hitting them too early with large doses of PK or CalMag when they don't need it. Excess can look a lot like deficiency (and cause lock outs of other things). Maybe cut out the CalMag next time until you notice a problem that requires it

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White.Black said:

Cal-Mag (Iron Chelate) - 500cc , 1000cc , 3000cc แคล-แมก (เหล็กคีเลต) ขนาด 500 ซีซี , 1000 ซีซี และ 3000 ซีซี | Lazada.co.th

แคลเซียม chalkcap 1000: เทคโนโลยีการส่งผ่าน Rf45มีการสูญเสียต่ําเป็นพิเศษและเทียบเท่ากับอัตราการรีเฟรชขั้นต่ํา60Hz ไฮโดรเจนเปอร์ออกไซด์: อุณหภูมิในการทํางาน: -40 C ถึง40 C. co2 bag สำหรับต้นไม้: ทําให้คุณใกล้ชิดกับหน้าต่างมากขึ้นกว่าที่เคย โพแทสเซียม ไซยาไนด์: เครื่องส่งสัญญาณ Fm...

www.lazada.co.th

This is the calmag, though I'm afraid it's not going to be helpful since this is some generic thai no brand mixture. I had success with using this in my previous grow, and my skywalker og in the DWC tent is looking great.

I use very small amounts of hydroguard, maybe 5 ml or so on 10 gallons of water (on the label it says 2 ml per gallon).
Reason is again, I had success doing this previously, and the skywalker in the DWC tent is doing OK. I don't pay too much attention to hydroguard dosage, because i use very small amounts, and keep the water cooled down to 19-20c and i took care that there's no light leaking into the system.

When I harvested my previous plant, the roots looked immaculate... so I'm basically just repeating what I did before and it works for the DWC tent, but it doesn't for RDWC.

I'm clearly doing something wrong(you think this looks like overfeeding?), and I hope I will push through another 2-3 weeks for this batch to be finished and on the next one will be more careful and precise with dosages.

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