Also my personal recipe for sts is basically making an outright spray. I had lost a few bottles of stock do to light heat etc. so I designed a recipe for just making 1000 ml of spray.
This recipe is for those that like to save on chem and those that do a lot of breeding and don't wanna mess around with a stock solution.
100mg silver nitrate
500mg sodium thiosulfate
Mix each individually into a 100ml of distilled water.
Let sit for 1 minute after all crystals dissolve.
Mix the silver nitrate into the sodium thiosulfate stir well. Then add to a 1 liter bottle. Fill the 1 liter bottle with 800ml or the rest of the way up with distilled water and viola ready to go sts spray.