Thatās what I use.
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If youāre purchasing Jacks, this is no longer needed separately, itās in the Jacks recipe.
Calcium nitrate (15-0-0) is the calcium and epsom salt is the magnesium.
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How do you guys start seeds for you hydroponic grows?
Rock wool, or rapid rooter plugs, not sure what @Myfriendis410 uses.
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Yeah, then into neoprene collars in a 4" net pot.
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I started with rockwool. Switched to rapid rooters. Will honestly probably switch back to rockwool after this round. They seemed to form a bigger, healthier root structure at the onset. Could just be strain differences but I think my plants with rockwool all were generally more established at a younger age.
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Iāll have to look into the cost comparison of the two, Iāve never looked at the prices of those. Rock wool it is sounds like.
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If you have an aerogarden, they work perfect for seed starting. It will maintain them for a few weeks actually.
Is it possible to have to many bubbles from the air-stone under the plant?
The more air you can add, the better oxygen the roots will get.
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I received the Jackās A, B and Epsom. I am still waiting on the Silica.
***What ratios do you guys use?
***Do you mix it per gallon?
***Do you use different ratios for different plant age/stages?
***Do you have to change the solution at certain intervals?
sorry for the inquisition!
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Best explanation of DLI Iāve seen. He makes it easy.
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Hope you also got a digital scale.
Seed to harvest.
I mix Armor Si in a separate bucket @ 1/4 tsp/gal till after the stretch and then do 1/2 tsp/gal until two weeks before harvest, then stop feeding armor Si all together.
In separate bucket, I mix in this order.
Part A @ 3.69 gr./gal, stir till dissolved.
Epson salt @ 1.5 gr./gal, stir till dissolved.
Part B @ 2.44 gr./gal, stir till dissolved
Then PH
I also use hydroguard @ 1/2 tsp/gal. Doesnāt matter if you add that before or after PHāing the mix.
Good luck! 
@HappyHydroGrower I hope you donāt mind me doing a copy paste of your mixture to put in my notes and probably share with others
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Not at all brother. Keep in mind, some will mix a little diff and maybe add a thing or two but Iāve done 3 grows this way and it works.
The only thing I will probably do differently next grow is not change the water every 10 days. Iāll probably let it go at least 3 weeks unless water starts to get too dirty. So far itās been pretty clean after 10 days.
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Per gallon mixture is:
3.6g of Part A
2.4g of Part B
1.5g of Epsom salt
I donāt cater to individual plants. I have increased part B on occasions, but most of the time run the same. Iāve increased epsom salt for additional magnesium for my lighting.
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Thatās cool it just gives me something to give to others that has been tried by someone I consider a good grower but I always tell whoever it is that itās second hand because Iāve never used jacksā¦ you never know I might get a wild hair and decide to try it lol I like trying new stuff it keeps my mind working
I just thought of a question if you would. I canāt remember what you are growing in or how exactly 
if you were to water manually in soil or coco would you mix it the same?
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@Covertgrower I copied yours as well that would give options for me or whomever I share them withā¦ thank you for sharing
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Honestly, Iāve never tried Jacks while I grew in coco but have seen many that have. I believe they would go about it the same way, mixing daily. Thatās the reason I got away from coco. I didnāt want to have to mix daily. Iām in rdwc and will never go back.
The only thing Iāll do next grow is change the water less unless it gets dirty.
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