hello i have just received a free 90 gallon tank stand and cover. i comes with all the goods as well but none of them have been functioning for ten years. the tank has been sitting in this persons basement for that whole time. now i figure ten years is a long time and i will not be able to use all the filtration because it was a reef tank and i am running fresh water but one of my questions is am i nuts to take this project on? can i rebuild a old reef tank from the glass. i believe as soon as i get it i will tape it and take all the silicone out. but what should i do with the calcium deposits on the glass? the whole set up as i was saying has been sitting for ten years and was salt, can i make it all new and fresh water 
