Applying Silver Nitrate & Sodium Thiosulfate Mixture for Fem Pollen

Discussion in 'Breeders Paradise' started by fridayfishfry, Mar 26, 2017.

    Daniel Lawton

    Daniel Lawton Well-Known Member

    Surprising. I'll add that to my list of things that can happen.

    I plan to design a more stable STS system soon, because I'm cloning seeds. Maybe once I have that and can try cloning seeds on every grow, I'll test the runoff theory a bit. I know for a fact none of the seed varieties I have tend to go herme.

    My seed goal is reliably < 12" autoflower seeds, with Northern Lights and Amnesia Haze being prime candidates.

    My strategy on the STS is to keep the silver nitrate and sodium thiosulfate solutions separated in bottles with an eye dropper, and only mix enough for a single plant, when needed.

    I'm pretty sure both solutions are stable if you keep them away from light, like in the fridge.

    Even cooler would be to get a Dave's Adjustable Hot Sauce bottle, which mixes according to how you set it when you spray your food. If that would work for STS, it'd be pretty neat.

    Ok, you have to be high to appreciate that design. And someone might spray their nachos by accident.

    xtsho Well-Known Member

    Ha ha ha
    It would probably work.
    Daniel Lawton

    Daniel Lawton Well-Known Member

    Especially since mixing those chemicals is a rather odd process. If you watch them mix very slowly, several things seem to be happening in sequence. That combination is even used as a "science demonstration" in schools.

    The only thing that worries me about the sprayer is what happens at the nozzle. Will it clog up?

    But just because it's funny, I think I'll actually do it. If it worked and the solutions were stable, it's a good ebay product.
    Daniel Lawton

    Daniel Lawton Well-Known Member

    Bad news on the Dave's. Discontinued. But very good news, you can buy those empty! And they promise to mix equal amounts of liquid from both sides. Figuring how much chemicals to put in the water is pretty easy, and fortunately the final solutions are very dilute.

    Here's a pic of the bottle.


    xtsho Well-Known Member

    Cool. I'm going to be mixing up some solution in the near future for another couple of crosses I plan on making. My friends are going to like their Christmas presents.

    javierherredia New Member

    I’ve tried the colloidal silver but I only sprayed up to day 23. Did you buy colloidal silver online or make your own?
    Daniel Lawton

    Daniel Lawton Well-Known Member

    I've read that online colloidal contains additives to keep it stable. Also, some say it tends to burn leaves, giving the impression colloidal always does that.

    If you make your own, it won't burn leaves. After a couple of weeks of spraying some might look a little unhappy, but it'll be the older leaves.

    If you make some, I highly recommend the 24VAC method. 2 spirals of silver wire (thinner) held apart by plastic pieces, with 24VAC directly through them. Reduce amount made to 150ml in a beaker, there's no reason to be making mason jars of it, it only takes longer.

    The 24VAC method makes beautiful deep yellow colloidal in 3 days, with no loss of silver from fuzz or electroplate crystals. A laser shined through it is smoother than the DC methods, and doesn't show all the "sparklers" indicating larger colloids.

    DC methods require you to wipe fuzz from the positive electrode, and the negative electrode can grow electroplate crystals if you try to turn the voltage down low enough to eliminate the positive terminal fuzz. Fuzz is reduced below 1.5V, but you'll still get electroplate losses. I saw them even at 1VDC, which is why I gave up and stuck with 24VAC.

    The 24VAC has none of those silver losses and can be left unattended. Just don't short the wires together or you'll blow the fuse in the 24VAC adapter.

    Best sprayer I've seen is the hydrogen peroxide sprayers you can buy at CVS. They hold the 150ml, and the sprayer is better than most you can buy separately.
    Qwertypops likes this.

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