Going from Brackish to full marine

Can anyone tell me how to acclimatize my eel to full marine from brackish? Just got my new 55 gallon and want to start it out marine. He's at a Sg of 1.015 now. It'll be a month or two to start up my tank, in the mean time i'd love to get him going. Any ideas?

 

just slowly add up the salt in the tank. do top off with saltwater and such.

 

I had a green spotted puffer that I raised the salinity in its tank to full marine. Read somewhere several times online a while back not to raise it more than .002 per week because it can kill the bacteria and stuff in the tank. Not sure if thats true but I just did it to be on the safe side lol. But if you're just going to move the eel from a brackish tank to full marine you can drip acclimate him into the new tank like you acclimate new fish and inverts. Hope this helps!