First time grow problems

[Pepe T]

Hi All, having some problems with my first grow and could really use some advice please.
Story so far:

Grow tent 60x60x140cm
600 watt LED light
Black orchid 5in extraction fan and carbon filter
DWC set up
1 Fan
Amnesia haze auto flower started 4 weeks ago
Calmag
GHE micro, bloom & flower
Hydroguard
PH 6

3 seeds started Aerogarden and transferred to tent after 2 weeks. One didn't work out after a week, one started very thin and bent and one started fine. Low levels of nutrients used since day one. One plant started really well and then the bottom leaves started to turn brown which I thought was a nitrogen deficiency so I introduced calmag. I noticed temps in the tent were around 28 degrees and the water was getting to a similar temperature so bought the black orchid extractor a week ago and also put some foil on my container to reflect some of the heat. This has reduced temps to around 23-24 degrees but I expected the led grow light to run much cooler. One plant is still a runt and the other one seems to have really slowed in growth and is only about 13cm high.

Any advice much appreciated.

[M_C]

What EC are you feeding at? My guess is it is too high

[Pepe T]

Have used 2ml each of micro, bloom and grow per gallon of water with calmag and Hydroguard at full strength on instructions

[M_C]

You can't grow like that mate. You really need to know the EC.... why are you adding calmag?

[RASTA]

My guess is not enough feed tbh. You say low dosage of nutes since day 1. And you suspect nitrogen deff. But you gave calmag?
Calmag wouldnt fix a nitrogen deff m8.

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[Pepe T]

I read somewhere that calmag would help with lack of nitrogen. Is that wrong? Am I best to increase the nutrients? I am on about half the dosage on the back of the bottle.

[Pepe T]

Am I best off binning it and starting again?

[Pepe T]

So now i'm confused. I bought anEC & TDS meter which shows ppm and us/cm
The ppm is showing 1228 and EC as 2456, I'm pretty sure these levels are too high even though I'm still using less notes than indicated on the back of the bottle. What levels should they be. Everything I look up seems to be in a different unit of measurement. I have PH6

[Jumper114]

So now i'm confused. I bought anEC & TDS meter which shows ppm and us/cm
The ppm is showing 1228 and EC as 2456, I'm pretty sure these levels are too high even though I'm still using less notes than indicated on the back of the bottle. What levels should they be. Everything I look up seems to be in a different unit of measurement. I have PH6

So your Ec is 2.4 which is very very high.

I never go above 0.7.

Seedlings 0.2, 4th node above 0.3 and then up 0.1 if paling.

How much calmag did you give them? With that Ec I am afraid they are fried.

[Jumper114]

So your Ec is 2.4 which is very very high.

I never go above 0.7.

Seedlings 0.2, 4th node above 0.3 and then up 0.1 if paling.

How much calmag did you give them? With that Ec I am afraid they are fried.

Doh .. just read your post... full strength calmag is your issue . That stuff is great but for a specific use. It is poison at your stage at that level.

If autos I would bin and start again ... if not flush the crap out of them.