hi guys i have just been given a juwel 350 corner tank ,it had not been used since an elderly gentleman had died ,there were no fish in there no filters or anything apart from 6 inches of stinking putrifying green water that smelled like toxic waste , so i brought it home and set about cleaning it out the back but i could not get rid of the smell , so as it cost me nothing i thought i would spray bleach in there leave it overnight then give it another really good clean the following day and it worked i am really happy with the results ,i continued to clean with fresh water to rid all of the bleach out of there with the hose pipe in there for hours ,now it is in the house on the stand ready to start putting gravel and the rest of the stuff in there ,but everytime i take the lid off it smells now of bleach is this safe ,i feel as i have washed it out with fairy liquid after the bleach and it looks really nice but still that smell of bleach is in it , is this tank ruined sorry to babble on a bit i just wanted to explain as much as i could