Hi guys ive made myself a hatchery, im using a few soda bottles with the bottoms cut off and airlines inseted into the caps, then im putting the bottles in my spare 25 gal aquarium full of water so i can provide the right temp and light if needed. Now i have one question, and if someone can answer it i will be very happy. Basically how much salt do i add to a certain amount of water? ive read that some ppl use 15grms of salt per 500ml of water, others use 2 tablespoons per 1 gallon. I have 3 bottles prepared for the hatchery so im gonna need atleast 1 gallon of water. How much salt do i need to add to the water? Oh by the way im using decapsulated eggs floating in some type of solution. Last time i hatched BBS was a good few years ago using a pre made sachet with salt and eggs added, so i need to get the saline mix just right. Any help would be most appreciated.