New Grower Making autofem seeds

[Royster213]

Hey all I'm about to attempt to make my own fem seeds starting with non-autos to get the process down pat or at least try to get it right. Going to use colloidal silver going to the local health store to see if they have it ,if not I'm going to use .999 silver and 9volt plug I don't have a ppm tester any suggestions on the subject

 

[Magic]

https://www.autoflower.org/threads/the-definitive-colloidal-silver-tutorial.9878/

 

[pop22]

CS works but IMO STS works better and is easy to make.

Preparation of STS:

First, a stock solution is made. It consists of two parts (A and B) that are initially mixed separately, 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. (See material safety data sheet links below). Note that silver nitrate and STS can cause brown stains upon drying, so spray over newspaper and avoid spilling.

Part A: .5 gram 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 (A) is then mixed into the sodium thiosulfate solution (B) while stirring rapidly. The resulting blend is stock silver thiosulfate solution (STS).

This stock 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. Then do that second spraying at the end of week 2... seems to be the key for getting pollen from the more difficult strains.