Alexander
Reef enthusiast
I just got a 80 gallon fish tank (fresh water) from a friend. i will have all the fish gone by the morning and then i am ripping it all apart and turning it to a new reef tank. Currently there is some kind of build up on the top edges of the aquarium. Kinda like salt creep.... but its obviously not salt and its stuck on there pretty good. what is the best way to clean stuff like this without potentially harming my tank in the future like using cleaning chemicals. should i just try hot water and a razor blade or does anyone else have any great suggestions. thanks