[GET MO]

aright so i did a side by side with two different recipes...
Recipe #1:

First, a stock solution of 1.0L is made. It consists of two parts (A and B) that are initially mixed separately, each into 500ml of water, then blended together. Part A is ALWAYS mixed into part B while stirring rapidly. Use distilled water; tap water may cause precipitates to form.

Wear gloves while mixing and using these chemicals, and mix and use in a properly ventilated area. A mask will prevent the breathing of any dust, which is caustic. STS is colorless and odorless, and poses minimal health risks if used as described here. Note that silver nitrate and STS can cause brown stains upon drying, so spray over newspaper and avoid spilling.

Part A: 0.5 grams silver nitrate stirred into 500ml distilled water
Part B: 2.5 grams sodium thiosulfate (anhydrous) stirred into 500ml distilled water

The silver nitrate dissolves within 15 seconds. The sodium thiosulfate takes 30-45 seconds to dissolve.

The silver nitrate solution (part A, 500ml) is then mixed into the sodium thiosulfate solution (part B, 500ml) while stirring rapidly. The resulting blend is silver thiosulfate solution (STS, 1000ml).

This stock(STS, 1000ml) solution is then diluted at a ratio of 1:9 to make a working solution. For example, 100ml of stock STS is added to 900ml of distilled water. This is then sprayed on select female plants.

Results
I sprayed 4 weeks ago then again 3 weeks ago. Both times I sprayed for complete plant coverage like i was trying to kill mites, waited about an hour, then sprayed completely again. The second spraying was diluted 1:7 instead of 1:9
This plant never got the damaged look that the other recipe generated, it created less balls but bigger ones, and today I saw one fully opened, so I took it and moved it around on my hand, and sure enough, pollen! And a nice amount coming out too. I put some on the barely flowering blackberry kush and a few others, I put this plant up on a table with a fan behind it blowing toward the rest of the crop, so hopefully everything will get a nice amount of pollination going.






Recipe #2

Dissolve the 1.58g Sodium Thiosulfate in 100 mL water to create a 0.1M stock solution
Dissolve the 1.7g Silver Nitrate in 100 mL water to create a 0.1M stock solution. Store in the dark.
Prepare 0.02M (20mM) Silver Thiosulfate by adding 20 mL 0.1 M silver nitrate into 80 mL 0.1M sodium thiosulfate (or amounts in ration of 4 parts thiosulfate solution to 1 part silver nitrate solution). Store up to 30 days refrigerated (best to use fresh each time).

Results

I doubled this recipe so i would have enough to spray the whole plant, and sprayed 4 weeks ago then again three weeks ago. Both times I sprayed for complete plant coverage like i was trying to kill mites, waited about an hour, then sprayed completely again.This recipe seemed to make the plant look pretty upset, yellowing and mangled looking leaves. The clusters have more balls but are smaller so far, and grow in the buds more then the other plant which grew them more so under the bud sights ... No pollen yet, but I don't think they have ripened yet either. Will keep y'all updated.








Notes: This experiment is taking place in a greenhouse during the winter with less than optimal lighting. My guess is that results may happen a little faster if given full 12/12 of direct light. For all applications I would completely spray the plant, wait for 1-2 hours, then completely spray it again, covering them as if to kill mites.


EDIT: Incase anyone is wondering, here is the mix that PF had success with after our numerous failures....

1g Silver mixed into 60ml RO
6G Sodium mixed into 240ml RO

Mix the 300ml into 600ml RO for a total of 900ml..

Spray at night in cool place 2x. The 2nd application is done 2 weeks after the 1st..

I have ditched all plants that where messed up from other try's.. I got 2 fresh plants 1 Glue and 1 sdubb. I just put the 1st application on using his recipe. I did not have any plants larger than 12" so that's what I used. I'm told this will not matter both plants will get 1-3x larger anyway while flowering...

[Hammerhead]

I had the same pissed off lady from the STS treatment. In the end the 1st plant did not produce any pollen. I'm trying a 2nd plant that is larger..This STS recipe is 1:4 if the 2nd one is the same I will try another recipe that's 1:9. That's good news your 1:9 recipe produced pollen. I just got another order of 25g silver... I will make upo a new stock solution tonight of 1:9

[unregistered190]

Thanks for sharing GET MO

[GET MO]

yeah i thought the second one would work better because it uses more silver, but i guess not.

[Grow Tech]

I use your first recipe but per Chimeras suggestion I dilute 1 part stock to 3 distilled h2o

[Hammerhead]

Ya that's a huge difference in amounts used.. .5g of silver is not much. My larger scale had a hard time with it. My smaller scale is not a 3 decimal point so had to make it blink between 2-3g.. Probably doesn't need to be that accurate but tried my best.


How much stock of silver is mixed into Stock of Sodium?? 100ml/300ml?


Couldn't we just change the ratio by reducing the amount of RO? use 100ml silver mixed into 500ml sodium for a 1:5 mix?? Going to try the 1:9 since you got that working. I can always try the 1:5 later

[GET MO]

I just updated the first post. the second spraying was diluted 1:7 instead of 1:9. Not sure if this had a positive effect or not but if I do it again I will repeat this step, since it worked. I didn't dilute the second recipe at all, just sprayed it on strait up.

[GET MO]

Originally Posted by Grow Tech

I use your first recipe but per Chimeras suggestion I dilute 1 part stock to 3 distilled h2o

Yeah i bet you could spray this one strait on the plant without dilution, if the other recipe doesn't kill the plant then this definitely wouldn't. I guess for some the idea is to use the least possible amounts to conserve materials. For me its whatever generates the best results.

For these two separate recipes to both work at all shows that there is a wide range of STS solutions that would work. its science, just not rocket science.

I do like how the first recipe didn't seem to stress the plant in any way tho.

[GET MO]

Originally Posted by Purple Frostbyte

Ya that's a huge difference in amounts used.. .5g of silver is not much. My larger scale had a hard time with it. My smaller scale is not a 3 decimal point so had to make it blink between 2-3g.. Probably doesn't need to be that accurate but tried my best.

Grow Tech

How much stock of silver is mixed into Stock of Sodium?? 100ml/300ml?


Couldn't we just change the ratio by reducing the amount of RO? use 100ml silver mixed into 500ml sodium for a 1:5 mix?? Going to try the 1:9 since you got that working. I can always try the 1:5 later

you put the whole 500 ml silver into the the whole 500ml of sodium thio to make 1000 ml solution, which is then diluted again with ro water 1:9, or i believe anywhere from 1:9 - 1:3 would work. like i said my second spray a week later was 1:7.
This recipe had me confused for the longest cuz i couldn't believe you dilute it that much when the other recipe makes such a small amount that isn't diluted and uses 3x the amount of silver.

[Hammerhead]

ya im a bit confused by that recipe. I already have the 2 500ml jars of Sodium/sliver.. I'm mixing them together now. I will then mix that with the RO.. That what I meant by 1:5 instead of the 900ml of RO use 500ml instead this would make it stronger.. I will try the 1:9 since that works.

It seems very weak with just 100ml mixed into 900 ml of ro?