The jump from fw to sw

[gottafindnemo]

I keep.looking at my 240 gallon fw tank thinking how sweet it would be to turn that to sw haha its makeing me wanna get a bigger tank for my arowana sooner

[Aquattro]

If you're going to use that hydrometer, check it against a refractometer regularly to make sure it's reasonably accurate. They're often not, and they change over time.