I need help with my hydrometer. This isn't really a saltwater tank, but it is brackish, so I need to measure the salt level.
Today at my lfs I got a floating hydrometer/thermometer. The reason I got it over the independent hydrometer is because I only need salt levels from 1.000 to 1.010. The independent hydrometer bottomed out at 1.012.
I got the hydrometer and took it home. I put it in my tank - you're supposed to put it in a place with no current - and guess what? With two filters in the tank, THERE'S NOWHERE WITHOUT CURRENT!!!
Whew... sorry. Unless you have experienced it, you have no idea how mad it makes you when the hydrometer keeps floating in circles in the middle of the aquarium so you can't read it.
So I got some water in a bucket and put the hydrometer in there. It read 1.000 salt. (or specific gravity, but idk what the abbreviation for that is). I used a whole carton of aquarium salt. Yes, I know that you're supposed to use marine salt, but I have heard from several people that for brackish aquariums, freshwater aquarium salt is better because it doesn't affect pH. So I used roughly enough aquarium salt to treat 107 gallons of water (I have a 90 gallon tank, but whatever. I'll add fresh water if it's too salty.)
The hydrometer is supposed to float according to how much salt is in the water. Density and that science stuff that I don't want to think about right now with school tomorrow. So why is it at 1.000? If anything, it's a little less than that. It's hard to get an exact reading right now.