Blumat auto watering

[rives]

Like rives says...I think it's there, just not in the analysis. The chlorosis seemed to affect the whole plant, all at once.


I'm at 43ppm Mg according to the calculator. How much epsom/gal do you think I should add?

There is a "handy-dandy" little epsom calculator down under the main body of the calculator if you use the downloaded version, I don't recall if it's there in the online version.

If you are at 43 now, 1 gram per gallon of Epsom will add 25.5ppm of Mg and 33.7ppm of Sulfur. That would take you up to almost 70ppm of Mg.

 

[Ez Rider]

There is a "handy-dandy" little epsom calculator down under the main body of the calculator if you use the downloaded version, I don't recall if it's there in the online version.

If you are at 43 now, 1 gram per gallon of Epsom will add 25.5ppm of Mg and 33.7ppm of Sulfur. That would take you up to almost 70ppm of Mg.

70ppm sounds good for the Mg. I didn't see any suggestions for sulfur. Is 33.7 enough?

 

[rives]

70ppm sounds good for the Mg. I didn't see any suggestions for sulfur. Is 33.7 enough?

Probably not if that is the sole source. I've never seen good information on what is really required, but some sources say it should be around double the Mg, one said a maximum of 400ppm, another that it should range between 20-250....

My normal veg mix runs about 60ppm of Mg and 90ppm of S. Pick a spot and adjust from there????

Perhaps Dave has some better information on it.

 

[Ez Rider]

Probably not if that is the sole source. I've never seen good information on what is really required, but some sources say it should be around double the Mg, one said a maximum of 400ppm, another that it should range between 20-250....

My normal veg mix runs about 60ppm of Mg and 90ppm of S. Pick a spot and adjust from there????

Perhaps Dave has some better information on it.

For the moment, I'm going with 20ml/gal base, 5ml/gal calmag, 1g/gal epsom and keeping my fingers crossed. The only botanicare product listing sulfur in the GA is the "sweet"(2% sulfur), but you only use the sweet in bloom. Like I said...gonna roll with the 20/5/1/ for now, and hope for the best. If the feed was too low, I should see results quick I'm thinking.

Do you vary the epsoms by growth stage, or just roll with 1.3g/gal all the time?

You have any opinion on the likelihood that the "extra" ppm's are from non-food sources, and therefore don't matter?

Thanks for hanging in there with me rives, you too dave

 

[rives]

I would expect that you will see a difference pretty quickly - hopefully in a good way!

I usually just hang with the epsom at that rate if I'm using normal feed levels and back it off a bit if I've got some particularly hungry girls because of the nutrient boost overall.

I couldn't give you a meaningful explanation of where your ppm boost is coming from.

Hope this helps.

 

[Dave Coulier]

Probably not if that is the sole source. I've never seen good information on what is really required, but some sources say it should be around double the Mg, one said a maximum of 400ppm, another that it should range between 20-250....

My normal veg mix runs about 60ppm of Mg and 90ppm of S. Pick a spot and adjust from there????

Perhaps Dave has some better information on it.

Id recommend 50ppm+ of S. 60-65 Works well for me, but if he really does have a S deficiency, he'll need to treat at a higher ppm for quick results. Id start with an epsom salt drench at 120ppm and see how things look in a few days.

 

[rives]

Id recommend 50ppm+ of S. 60-65 Works well for me, but if he really does have a S deficiency, he'll need to treat at a higher ppm for quick results. Id start with an epsom salt drench at 120ppm and see how things look in a few days.

You think a drench over a foliar spray? I've had pretty good luck with turning things around quickly with foliar at 1 tbsp./gallon prior to flowering, and not have to worry about the other impacts from drenching.

 

[Ez Rider]

Id recommend 50ppm+ of S. 60-65 Works well for me, but if he really does have a S deficiency, he'll need to treat at a higher ppm for quick results. Id start with an epsom salt drench at 120ppm and see how things look in a few days.

You think a drench over a foliar spray? I've had pretty good luck with turning things around quickly with foliar at 1 tbsp./gallon prior to flowering, and not have to worry about the other impacts from drenching.

I was leaning towards a 1g/gal foliar, in addition to the 1g/gal of epsoms in the res. Is it worthwhile to ph the foliar?

I found this calculator on Botanicares site(http://www.botanicare.com/Nutrients/Nutrient-Calculator.aspx). You can play with the #'s and add/subtract additives. Helpful,but still tells me nothing about sulfur content. FWIW, Botanicare says under 1800ppm is OK.

 

[rives]

1 gram per gallon isn't going to do much as a foliar feed. I think most recommended rates are from 1 teaspoon per quart to 1 tablespoon (3 teaspoons) per gallon. 1 teaspoon is about 5.5 grams.

I don't know about pHing the foliar - I've never bothered.

 

[Ez Rider]

1 gram per gallon isn't going to do much as a foliar feed. I think most recommended rates are from 1 teaspoon per quart to 1 tablespoon (3 teaspoons) per gallon. 1 teaspoon is about 5.5 grams.

I don't know about pHing the foliar - I've never bothered.

Thanks for the clarification. I've got ~5.5g of epsoms mixing in a gal of water now. I'll give them a spray in a bit. Would you recommend a repeat spray in a day or so?

How many ppm would you expect 5.5g of epsoms to add?

 

[rives]

It should be about 140ppm of Mg and 185ppm of S. Yes, I'd spray them several times - I think it's pretty damn hard to overdo things with foliar. Careful with the lighting though - you can burn them with that strong of a light & the water droplets. Move the light back or catch them just before lights out.

 

[Ez Rider]

Hey rives(or anyone else), this is pretty OT, but I know you're a gadget guy. Take a look at this: http://www.airflowbalancing.com/abm.html
I picked one up at the supply house for $40. It's allegedly quite accurate. Based on it's readings, I felt comfortable turning my exhaust fan down to "low" thereby saving some electricity. I also used it to perfectly dial in my friends oversized fans using a rheostat. He could barley open the doors to his room before we dialed back the fans. He'd been unwilling to dial them down blind, but based on the meters readings, he was comfortable turning the fan WAY down. He was pulling so much, that a reasonable amount seemed like nothing. He can now easily open the doors, and the room is healthier too.

 

[Ez Rider]

It should be about 140ppm of Mg and 185ppm of S. Yes, I'd spray them several times - I think it's pretty damn hard to overdo things with foliar. Careful with the lighting though - you can burn them with that strong of a light & the water droplets. Move the light back or catch them just before lights out.

My fresca sol's completely negate that problem

 

[Ez Rider]

It should be about 140ppm of Mg and 185ppm of S. Yes, I'd spray them several times - I think it's pretty damn hard to overdo things with foliar. Careful with the lighting though - you can burn them with that strong of a light & the water droplets. Move the light back or catch them just before lights out.

I'm getting ~550ppm from 5.5g (.5 scale) This is somewhat higher than your #'s. Thoughts? Should I use it? Yes my scale is reasonably accurate(it weighs a nickel @ 5.0g) . I also checked the ppm meter: it reads 1380 in the 1382 solution, so I think the meter is good too. This is what I'm actually using:

 

[rives]

Should be fine.

 

[Ez Rider]

Should be fine.

Let's hope so...I'm rolling with it. Will the leftover solution still be good to use tomorrow(after a good shake)? I'll try to get some update pics up tomorrow evening. Gonna play with that calculator on the botanicare site too.

 

[Dave Coulier]

You think a drench over a foliar spray? I've had pretty good luck with turning things around quickly with foliar at 1 tbsp./gallon prior to flowering, and not have to worry about the other impacts from drenching.

I always opt for root drenches when treating nutrient deficiencies. Foliar feeding can improve things, but we still have the problem of lack of S in the media. Only a root drench will take care of that. Better yet, he could do foliar and root drench. Best of both worlds.

If he does do a drench, he should opt for pulse watering rather than just drown the poor girl.

 

[Ez Rider]

I always opt for root drenches when treating nutrient deficiencies. Foliar feeding can improve things, but we still have the problem of lack of S in the media. Only a root drench will take care of that. Better yet, he could do foliar and root drench. Best of both worlds.

If he does do a drench, he should opt for pulse watering rather than just drown the poor girl.

"Pulse watering"? I don't understand.

 

[Dave Coulier]

"Pulse watering"? I don't understand.

Pulse watering is a method I learned from Spurr during his time here. Its spreading out irrigation by hand over a time span of maybe 15min-1hr instead of giving the plant all its water in a single drench. The time period in between the pulses gives the moisture time to wick throughout the media.

This will lead to less channeling of water, more consistent moisture throughout , and improved air porosity. Where as if someone were to just dump all the water on their plant quickly the opposite is likely to occur.

 

[Ez Rider]

The increased feed seems to be doing the trick. See my infimary thread for details https://www.icmag.com/ic/showthread.php?p=6665097#post6665097