Ok, I just got a 55 gallon tank from a friend, and right now I have sand, live rock, two crabs and a powerhead in there. It's only about half full due to heavy snow and just all around bad weather causing complications in me getting the rest of the water. The water level is too low for my filter to actually do any filtration. First of all, my specific gravity meter is reading out 1.027, and I need to know is that too high, or is it what I'm supposed to be going for ? If that salinity level is too high, I only have about half of the tank full of water, and with me here I have a bottle of water treatment. It's aquasafe. It says on the bottle that it makes tap water safe for fish (FW and Salt water). The back of the bottle reads: Aquasafe makes tap water safe for fish by neutralizing clorine and heavy metals present in municipal water supplies. Aquasafe also neutralizes chloramine by breaking down the bond between chlorine and ammonia while reducing both the fish-toxic chlorine and ammonia components. Additionally, aquasafe provides a slime coating to help wounds heal and protect fish from abrasions. Aquasafe should be used when setting up a new aquarium and with every partial water change. Okay, what I really need to know is, if my salinity level is too high, and I only have half of the water in the tank, would I be able to just treat some water with this stuff and pour it in the tank ? If I could, It would both dilude the salt a little and I'd be able to add enough water to get the filter to work. ******Note: I'm not using this specific tank for octopuses, as this is my first saltwater aquarium attempt, and I'd rather not start out on an octopus.