I have a koralia that was overtaken with some sort of red bubble algae. I have upgraded tanks and would like to use this power head in the new tank. The is still some "gunk" left in some of the corners that are hard to get to with a tooth brush and I also used a knife of on some of it which helped to get some gunk off. Question is, the power head has been out for 3 days now and is completely dry, should it be safe to add it to the new tank?