Calcium deficiency in high pressure aeroponics

Calmag should optimally only be used as a pH buffer in water cultures if needed. You would be surprised how low the requirements for both Ca/Mg are in water cultures and Aeroponics.

There's more than enough Ca in the base formula for running Aero with 3:1 Ca/Mg ratio. You don't want to lower nitrogen even lower and you don't need extra Ca/Mg in Aero. Sensi 3-part is different in composition compared to gh 3 part. Sensi micro only has 2.4% Ca compared to 5.0% in GH's equivalent. Not comparable when doing "Lucas formula".

You don't need to change the mineral ratio much throughout the grow since the requirements doesn't change much. Many people use the same formula from start to finish with stellar results.

If you want to supplement with Ca/Mg it's better to choose a product like Calimagic with very little nitrogen content.

OneHitDone said:

What is the % of hypochlorous acid on the product you are using?

Salt is a no go. I have a Hypochlorous generator and have tried it. You will fry your plants from the excess sodium.
They are recommending Potassium Chloride be used for agricultural applications rather than Sodium Chloride (Table Salt)
I am going to start a post on this topic soon!

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The cheapest and easiest route for sterility is using regular unscented bleach(sodium hypochlorite). The Sodium part is minute compared to the hypochlorite side of the molecule and at application rates it's not even detectable. You may even argue that the small amount of sodium better metabolism and uptake of water.

Hypochlorite becomes hypochlorous acid when being dissolved in water. People argue that Calcium hypochlorite is better but it's always more crude in practical use with more sodium chloride than any bleach intended for cleaning floors and surfaces.

I've used it for decades at this point using a dilution calculator like this:
http://foodsafe.ca/dilution-calculator.html

0.5-1ppm is recommended for Aero.

Wastei said:

The cheapest and easiest route for sterility is using regular unscented bleach(sodium hypochlorite). The Sodium part is minute compared to the hypochlorite side of the molecule and at application rates it's not even detectable. You may even argue that the small amount of sodium better metabolism and uptake of water.

Hypochlorite becomes hypochlorous acid when being dissolved in water. People argue that Calcium hypochlorite is better but it's always more crude in practical use with more sodium chloride than any bleach intended for cleaning floors and surfaces.

I've used it for decades at this point using a dilution calculator like this:
http://foodsafe.ca/dilution-calculator.html

0.5-1ppm is recommended for Aero.

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Sodium makes up approximately 30.88% of the mass of sodium hypochlorite (NaOCl).

I think my Calcium hypochlorite is less than 5% sodium.
Was dirt cheap too, made for disinfecting well water.

endorflight said:

Iam not sure on that. This offends basically what i worked out with @cage, to just increase the calcium. If there is more calcium in the water i guess more will be absorbed at same transpiration levels.

For now i keep running at 5.8-6.2 but ill further investigate what is the ideal range for aero. Sadly there is little info available for HPA overall.

You knocked off one of my horns. I dont want to ruin it by pushing too high. Despite i like extremes so much, i want to be a sucessfully grower the most. I backed down to 750 PPFD and will increase from there again. I will from now on only try to use extreme light levels when i have mastered everything else.

Ill look into that. I didnt expected to deal with the nutrients on such (for me) advanced levels.

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The calcium uptake is still parabolic, so you can't keep upping it and expect it to linearly follow.
My main concern was that there was too much potassium that was antagonizing the calcium uptake.

Also disregard my idea for dropping the grow, it contains most of the Mg in the program,
though you are using the calmg product.
Yeah dont worry, no need to go so deep, one can manage with much less.

Wastei said:

The cheapest and easiest route for sterility is using regular unscented bleach(sodium hypochlorite). The Sodium part is minute compared to the hypochlorite side of the molecule and at application rates it's not even detectable. You may even argue that the small amount of sodium better metabolism and uptake of water.

Hypochlorite becomes hypochlorous acid when being dissolved in water. People argue that Calcium hypochlorite is better but it's always more crude in practical use with more sodium chloride than any bleach intended for cleaning floors and surfaces.

I've used it for decades at this point using a dilution calculator like this:
http://foodsafe.ca/dilution-calculator.html

0.5-1ppm is recommended for Aero.

Click to expand...

When running bleach, do you ever check for Free Chlorine in the nutrient solution or just go by a calculated addition?