Is this calcium deficiency?

87swampthing · Apr 11, 2021

My set up is 18x30x36 tent. Light is spider farmer sf1000d @18". 4" exhaust no filter. Passive intake. 1 gal. fabric pot with coco perlite mix(75/25). Temps have been 70-79 humidity 50-55. I water with a under the sink RO. Water by itself is 38ppms. I add 4 ml of floramicro, 5ml of floragrow, 1ml of florabloom, and 5ml of calmag to 1 gal of water. Ph to 6.0. After that is around 650 ppm. Just started to see this deficiency. I was thinking it was calcium. Any other thoughts and solutions? Thanks.

twentyeight.threefive · Apr 11, 2021

87swampthing said:
My set up is 18x30x36 tent. Light is spider farmer sf1000d @18". 4" exhaust no filter. Passive intake. 1 gal. fabric pot with coco perlite mix(75/25). Temps have been 70-79 humidity 50-55. I water with a under the sink RO. Water by itself is 38ppms. I add 4 ml of floramicro, 5ml of floragrow, 1ml of florabloom, and 5ml of calmag to 1 gal of water. Ph to 6.0. After that is around 650 ppm. Just started to see this deficiency. I was thinking it was calcium. Any other thoughts and solutions? Thanks.

5 ml/gal is usually the highest recommended amount of CalMag. Calcium deficiency shows as brown spots. What is your final feed EC? Are you feeding to runoff?

TintEastwood · Apr 11, 2021

Here's a rough breakdown of your mix.

87swampthing · Apr 11, 2021

twentyeight.threefive said:
5 ml/gal is usually the highest recommended amount of CalMag. Calcium deficiency shows as brown spots. What is your final feed EC? Are you feeding to runoff?

Run off is very minimal they are still small plants. Haven't checked ec, just ppms. Don't know if my gauge has an ec option. I'll check and come back with an answer.

87swampthing · Apr 11, 2021

I have 3 different plants in the tent, but this is the only one showing anything. It is candy land.

87swampthing · Apr 11, 2021

twentyeight.threefive said:
5 ml/gal is usually the highest recommended amount of CalMag. Calcium deficiency shows as brown spots. What is your final feed EC? Are you feeding to runoff?

Before nutes 40 ppms 21 ec. Just made another batch of feed water 750ppms and 1500ec.

Tyblizzy · Apr 11, 2021

Mixture may be a bit high at 750ppm I would mix plain water maybe a quart or less with 3 quarts of your mixture possibly half and half also good luck add another 10-15%rh as well

Tyblizzy · Apr 11, 2021

Tyblizzy said:
Mixture may be a bit high at 750ppm I would mix plain water maybe a quart or less with 3 quarts of your mixture possibly half and half also good luck add another 10-15%rh as well

One more thing bro ph to 5.78-5.89

87swampthing · Apr 11, 2021

Tyblizzy said:
One more thing bro ph to 5.78-5.89

Ok, thank you for your input. I had ph at 5.9 on the water I made. I will wait for more replays.

TintEastwood · Apr 11, 2021

Numbers for a few other commonly known nutrient mixes.

Compare your P, K, and Mg to these.

Not my idea of fun. Lol
Coco grow problems caused me to start keeping track of elemental ppm chit.

87swampthing · Apr 12, 2021

TintEastwood said:
Numbers for a few other commonly known nutrient mixes.
View attachment 4876744

Compare your P, K, and Mg to these.

Not my idea of fun. Lol
Coco grow problems caused me to start keeping track of elemental ppm chit.

So it looks like I need to bump up my bloom. I'm guessing about 3 ml? Do you have a feed chart that you use for the flora series? I have just been using one I found online.

Roy O'Bannon · Apr 12, 2021

Haven't tried it, only read about it. There is a kiss method and a head method with gh nutes.
1st one is 1 part micro 2 parts bloom
2nd one is, 6 parts micro, 9 parts bloom.
3rd is 7grams of maxibloom
all per gallon. There are some monster thread on it.

Doug Dawson · Apr 12, 2021

87swampthing said:
My set up is 18x30x36 tent. Light is spider farmer sf1000d @18". 4" exhaust no filter. Passive intake. 1 gal. fabric pot with coco perlite mix(75/25). Temps have been 70-79 humidity 50-55. I water with a under the sink RO. Water by itself is 38ppms. I add 4 ml of floramicro, 5ml of floragrow, 1ml of florabloom, and 5ml of calmag to 1 gal of water. Ph to 6.0. After that is around 650 ppm. Just started to see this deficiency. I was thinking it was calcium. Any other thoughts and solutions? Thanks.

Hey, 5 ML of Calmag is too much. You are giving it the week 2 feed which should have 1.5 ML of Calmag. Too much calcium will also lock out Magnesium. Perhaps drop to 1.5 ml and add some Epsom salt.

trambles · Apr 12, 2021

What does the nutrients say to use?
Those plants look deficient across the board, 650ppm is not enough. Should be closer to 900.
When I ran GH I think I used 10 green, 10 brown, and 5 pink for vegging.
I would double whatever u are feeding them now.

TintEastwood · Apr 12, 2021

Be sure to take a peek at the new GH charts.

Feedcharts

Feedcharts for every experience level. Access easy-to-follow plans that tell you exactly when and how much to feed your plants from seed to harvest for every…

generalhydroponics.com

Doug Dawson · Apr 12, 2021

TintEastwood said:
Be sure to take a peek at the new GH charts.

Feedcharts

Feedcharts for every experience level. Access easy-to-follow plans that tell you exactly when and how much to feed your plants from seed to harvest for every…

generalhydroponics.com

I have to wonder why their new feed charts are so different than the one I posted. The one above works well but their new one is just odd by comparison considering their nutes have not changed. Must be because it doesn't show the other products but still seems very odd.

TintEastwood · Apr 12, 2021

Doug Dawson said:
I have to wonder why their new feed charts are so different than the one I posted. The one above works well but their new one is just odd by comparison considering their nutes have not changed. Must be because it doesn't show the other products but still seems very odd.

There are 3 different charts.

3 part
6 part
10 part

They look pretty cool compared to the old ones.

Guide...

twentyeight.threefive · Apr 12, 2021

87swampthing said:
Run off is very minimal they are still small plants. Haven't checked ec, just ppms. Don't know if my gauge has an ec option. I'll check and come back with an answer.

You should be watering to about 20% runoff. EC is the same as ppm just a different scale. I'd back off the CalMag as Doug said and make sure you have significant runoff.

TintEastwood · Apr 12, 2021

Doug Dawson · Apr 12, 2021

TintEastwood said:
There are 3 different charts.

3 part
6 part
10 part

They look pretty cool compared to the old ones.

Guide...

I get that but the one I use I posted above and than posted the new one. So for week 1 seedling my chart shows 2ML, 1ML and 1ML. The new chart shows 2.5, 2.5, 2.5 or 2,2,2 or 1.8, 1.8 and 1.8 for light med and aggressive feeds. It just makes no sense to me to be honest. The nutes have not changed, you would think at least 1 mix would match their own charts. Now I have to wonder which one is right although I have used the first one I posted successfully.

Is this calcium deficiency?

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