its such a low amount of salt that my in tank hydrometer doesnt even read it. i was changing stuff around in my tank and after i removed a decent size ornament my water level was able to be seen past the top of the tank frame, which bothers me, so i had a container aside with Instant Ocean mixture dissolving and aerating for when i was doing more brackish water(previous to mr congo). i would estimate i put like a gallon of salt water in there. i dont plan on putting more in because of the congo being FW. water change is scheduled for this weekend so im sure he will appreciate a full FW water change not slightly brackish. i have had him for almost a week. the crab, pleco and my other two puffers are fine, no one has fin damage. the only things that seem to have taken a hit since i put the congo in there are the ghost shrimp. they seem to have dwindled down a lot. last night was another night i watched the congo sitting like he was perched on this cave decoration i have then he was moving around among the other puffers before going down to bury in the sand. still isnt showing signs of aggressiveness. i like to sit there with all lights off but the fish tank and sit on my couch to watch them because they cant see me back there and i like seeing what fish do when they are not being watched.
