CA Deficiency with DynaGro

[GrowinDad]

All opinions appreciated. I have to say that I am thinking it was the CA, for whatever reason. Plants are not getting any worse, the early signs in the better one are not spreading. Still not sure why it is. My filter says it does not take out CA but I am thinking it must somehow...

 

[HeartIandhank]

Good to hear that it at least is not gettjng worse.
Like Jondamon was saying.. if you are in coco some calmag is great in flower.

I used to use it all thru flower. Lately i have stopped adding around wk 4 flower without trouble... In coco, drain to waste.

Good luck to you

 

[Hydroburn]

DG doesnt have enough cal because it is formulated for use with tap water and they assume everyone has hard water. Or maybe it is because they can't put more in the same bottle without everything crystallizing even faster. Either way, dg grow bloom and fp have 2% cal, where most other nutes like gh and botanicare are more like 5%.

 

[chuck estevez]

Have you ALWAYS grown under LED? It is my understanding that plants use nutrients at different rates under LED.s

 

[GrowinDad]

I have only been growing two years, but most of it under LED.

 

[Observe & Report]

I had the same problem using FoliagePro. Massive Mg deficiency (purple stems, eventually yellowing and spots, leaves dying, growth stopping.) Plugging the FP analysis and my water report into HydroBuddy revealed only 15 ppm of Mg in my feed, the books recommend 40 ppm. Now I add 1/4 tsp of Epsom salts.

 

[Wilksey]

I used bloom alone during a previous grow while flowering and experienced some yellowing towards the end and opted to add some grow for the N. This is in coco, mind you.

This past grow, I opted to stick with grow alone, all throughout the grow and had 0 yellow leave issues.

I use dyna for my other plants as well, and it seems that only the cannabis suffers from the yellowing issue while using bloom alone. My peppers love the stuff.

Heard some good things about the foilage pro, and am going to try that in the future.

Best of luck to you.

 

[duster74]

I've used Foliage Pro from beginning to end with no magnesium or calcium issues. Grown in fortified soils and Promix with great success. Shouldn't need to feed more than 1.0 EC in flower from my experience. Hope this helps.

 

[Theophilus]

I've used Foliage Pro from beginning to end with no magnesium or calcium issues. Grown in fortified soils and Promix with great success. Shouldn't need to feed more than 1.0 EC in flower from my experience. Hope this helps.

I agree. But currently I am running Platinum OG's under 1000 watt lights with Foliage Pro and Protekt and find that I have to hit at least 1.2 EC to keep them green. This doesn't seem to be the case under my 600's though.

 

[FrostyPelican]

I used/use two Dyna gro products. Grow and Bloom and every time I've used the bloom formula I'd get a CA/MG deficiency.

In hydro (DWC), city water, RO water didn't matter, I'd get a Cal/Mag deficiency every time when using the bloom during flower. I was a big supporter of dyna gro but I've seen now that the Dyna Gro Bloom is not formulated correctly. Not just for cannabis but for other garden variety vegetables. I grow a great deal of other plants and even my tomatoes would get a bad CA/MG deficiency.

Sure this product is affordable and easy to use but for me, it's absolutely mandatory to have a fresh bottle of Cal Mag on hand if you're going to flower with it. Cal Mag is not cheap either when running even a modest hydro garden. I've since switched GH maxi bloom for evaluation for flowering nutes.

 

[homebrewer]

I used/use two Dyna gro products. Grow and Bloom and every time I've used the bloom formula I'd get a CA/MG deficiency.

In hydro (DWC), city water, RO water didn't matter, I'd get a Cal/Mag deficiency every time when using the bloom during flower. I was a big supporter of dyna gro but I've seen now that the Dyna Gro Bloom is not formulated correctly. Not just for cannabis but for other garden variety vegetables. I grow a great deal of other plants and even my tomatoes would get a bad CA/MG deficiency.

Sure this product is affordable and easy to use but for me, it's absolutely mandatory to have a fresh bottle of Cal Mag on hand if you're going to flower with it. Cal Mag is not cheap either when running even a modest hydro garden. I've since switched GH maxi bloom for evaluation for flowering nutes.

I hate to break it to you but there is no such thing as a 'Ca/Mg' deficiency. In terms of plant nutrition, calcium and magnesium can be antagonistic when one element is way out of balance so it would either be a calcium OR magnesium issue, unless of course both were missing from the formula. In this case, both are supplied at adequate levels so I can assure you that whatever your issue was, it was operator error.

You are correct about DG bloom in the respect that it's not formulated correctly. It has far too much P and not enough N to keep plants green. If bloom is to be used at all, it should be cut with grow or foliage pro.

 

[70's natureboy]

No problems here with Dynagro. I like to keep it simple though. I just use Foliage pro all the way through, different EC for different strains in plain ol' tap water. I'm mostly hydro now but play with some Pro Mix once in a while for nostalgia. I would never go to the trouble of trying to improve on Pro Mix with my own mix. That is asking for problems I used to use Protek on half of them and didn't notice any difference so I quit using it. If you over-think it you will make your own problems. KISS.

 

[workinit]

No problems here with Dynagro. I like to keep it simple though. I just use Foliage pro all the way through, different EC for different strains in plain ol' tap water. I'm mostly hydro now but play with some Pro Mix once in a while for nostalgia. I would never go to the trouble of trying to improve on Pro Mix with my own mix. That is asking for problems I used to use Protek on half of them and didn't notice any difference so I quit using it. If you over-think it you will make your own problems. KISS.

Excellent post!