Magnesium deficiancy?

This is my first grow in coco. I purchased a brick of coco, washed it, and buffered it with cal mag. Seeds sprouted in about 48 hours and now I'm on week 4. I'm feeding them about 500 ppm of GH Flora nutrients and cal mag ph'd to 5.8. What am I missing? Temps are right at 70. Humitity varies from 50 to 60%. They're being fed everyday with runoff. I have one plant that is mixed with soil because I ran out of coco, and its surpassed all of the others, and it was started 2 days later. The 2 in the back are Alaskan purple autos and they seem to be mostly fine. The long and lanky one in the middle is a Peyote Wifi(seems to be a little more sensitive to feeding, even more than the autos), and the two in the front are cheese. The cheese on the right is the one on soil, and its thriving. No issues with that one. Ill provide additional info and photos if needed.

idk hard to tell. 1 tsp per gal of epsom salt water it in now and the next time you feed or water. Wont hurt a thing. see if it improves.

Hard to tell with the blurple on. Turn it off and take a pic with the phone flash Or natural light. Temp right at 70??? During the day? Bring it up to 78-80.

You add cal mag first then micro second right ? Then the rest in any order ?

Yup

Enkisatan said:

You add cal mag first then micro second right ? Then the rest in any order ?

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Silica first, then cal-mag, then micro

xmatox said:

Silica first, then cal-mag, then micro

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Awesome thanks for the tip , cause that was my next question

Merlin1147 said:

Hard to tell with the blurple on. Turn it off and take a pic with the phone flash Or natural light. Temp right at 70??? During the day? Bring it up to 78-80.

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Yeah, my temps are on the low side because my humidity gets into the 80s when i raise the temp. The only way for me to raise then atm is to shit my exhaust fan off.

Enkisatan said:

You add cal mag first then micro second right ? Then the rest in any order ?

Click to expand...

Thats correct

Enkisatan said:

You add cal mag first then micro second right ? Then the rest in any order ?

Click to expand...

Thats correct.

This is what I get for trying to be a perfectionist, while being inexperienced. It's quickly becoming overwhelming and now I'm wishing i would have stuck with soil. The healhier looking plant is a mix of soil and coco only because i ran out of coco. Im glad i atleast have that one.

danks.for.asking said:

Yeah, my temps are on the low side because my humidity gets into the 80s when i raise the temp. The only way for me to raise then atm is to shit my exhaust fan off.

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can you run a dehumidifier I the room?

Merlin1147 said:

can you run a dehumidifier I the room?

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I'm getting one tomorrow. Humidity wasnt terrible todsy and had temps about 80. Sidnt plan on getting the dehumidifier until flowering. But i disnt realize that i would have low temp problems of all things.

danks.for.asking said:

Yeah, my temps are on the low side because my humidity gets into the 80s when i raise the temp. The only way for me to raise then atm is to shit my exhaust fan off.

Click to expand...

What is your Mg additive? I use GH's CaliMagic and use 5 ml/gallon.

I'm using GH cal-mag. Also 5ml per gallon. I'm gonna cut back on it now. I'm no longer using filtered water. My tap is about 120 ppm. I have a 72 qt tub that I let the chlorine evaporate from now. Alsonolan on getting a bubble stone and pump to speed up the evaporation. Pretty sure my local tap is only treated with chlorine.

danks.for.asking said:

I'm using GH cal-mag. Also 5ml per gallon. I'm gonna cut back on it now. I'm no longer using filtered water. My tap is about 120 ppm. I have a 72 qt tub that I let the chlorine evaporate from now. Alsonolan on getting a bubble stone and pump to speed up the evaporation. Pretty sure my local tap is only treated with chlorine.

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I’m in Chicago ,,,I found out from the local grow shop ,,,that my water was just treated with chlorine, the guy even broke down the parts per millions to me of trace minerals ,I wish I had had a pen

Enkisatan said:

I’m in Chicago ,,,I found out from the local grow shop ,,,that my water was just treated with chlorine, the guy even broke down the parts per millions to me of trace minerals ,I wish I had had a pen

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I would definitely recommend a tds or ec meter. They are very affordable. A lot of the times the recommended doses are still way to hot, just not to risk burning your girls. Also grab a ph meter of you dont have one.

Merlin1147 said:

can you run a dehumidifier I the room?

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I finally got temps and humidity under control and the girls are already looking better. I had to do some defoliation on a few to expose some of the side branching that was struggling. Woke up this morning and the side branching has already improved. Hated to get rid of those large fan leaves, but they were blocking to much lightbon these squaty plants. Luckily i have about a month to really have some good vegetative growth, since ibwant flower my photoperiods until the autos finish up. Luckily cannabis recovers quickly and very well. I coildnt imaginenif it was an hard as growong orchids haha

Got temps up, humidity down, and things are looking a little better. Did some defoliation, and somenleaf tucking on the autos and they are doing very well

danks.for.asking said:

Yeah, my temps are on the low side because my humidity gets into the 80s when i raise the temp. The only way for me to raise then atm is to shit my exhaust fan off.

Click to expand...

Its been a few weeks. Bought a dehumidifier and a heater with a thermostat for my tent. Started to PH to around 6.2 and my girls are doing great now. just way overcrowded....