I have an emergency. I need fresh saltwater but I can't find my hydrometer. I am using kent salt and need to know how many cups of salt for five gallons of water? I thought it was 3 cups but it has been so long i can't remember, please help.
Usually it is 1/2 cup per gallon of water. so for 5 gallons, 2 1/2 cups should work to get you in the 1.023-1.024 range. add just a little more to get it up to 1.025. Where in Seattle do you live? I can give you my hydrometer. I don't use it since I got a refractometer. It's much more accurate.
If I remember correctly it is 1/2 cup per gallon to make 1.023 saltwater, thats what it says on the package any way. I must say that I have never had it come out any where near right with out a hydrometer. Maybe get it close to the tank reading with a tds meter if you have one. just a idea. HTH Steve
Thanks flugelness. I just ordered a refratometer but it does not arrive for 3 days, and i desperately need saltwater now. I think 3 cup was right with my last bucket of kent salt, I will keep it a little high just to be sure.
Hydrometers can be calibrated at different temperatures. Hopefully, it says what temperature either on the hydrometer or in the paperwork that came with the hydrometer.
Dr. Ron published a table of hydrometer corrections a few years ago. Unfortunately, a hard-drive crash wiped out the link I had stored, and I have been using a refractometer ever since my hydrometer rolled off the table onto a concrete floor. (so I haven't tried to re-locate the correction table).