Introduction The fundamental difference between freshwater and marine aquariums is of course, their respective salt content. The salt level is usually reported as either salinity (parts per thousand of salt in water) or specific gravity (the density of the solution relative to freshwater). Measuring the specific gravity of an aquarium is one of the first tasks learned by new marine aquarists ...
A lot of synthetic salt companies recommend different salinity levels for different tank types e.g. fish only is 30 ppt and reef is 35 ppt. My question is: Do they recommend 35 ppt because of the increased micro and macro element levels at that salinity? Or because the corals need a salt level...
Hi all, I just bought a Hanna salinity checker and checked both the water I was mixing and the tank water. For a while I’ve been using a secondhand refractometer, which I’ve never calibrated myself (rookie mistake, I know). I’ve always tested it to ppm, and it’s come up as 1.024 specific...
I rejoined the hobby back ~2016, and everyone seemed to agree that 1.025 was the perfect salinity. Lately though, more and more I've been hearing that 35 ppt is what you should target for mixed reef or SPS dom. It's strange to me that these are often used interchangeably, since 1.025 is really...
What is your ideal salinity. My tank is at 79 degrees F and has a specific gravity of 1.022. I read in ppt that that equates 31.6 ppt salinity. What is the ideal range you guys have success with??
Hyposalinity Jay Hemdal 2024 This term refers to a long-term bath treatment for marine fishes in which the salt content of the water is lowered and held below the point that certain parasites can survive. The salt level reached, and the time of the treatment are the two variables...