Hello all! So about 4 months ago I had a 30 gallon tank set up and ready to go with water in it and aimed to do a fish-less cycle for about a months time. After the month came and went I sort of ignored the tank due to work and school piling up, so I’m just wondering if I can actually use this water or if I’ll have to start it all over again. An important note is that I haven’t had a filter running during this time, so essentially I’ve just had treated stagnant water sitting in the tank. So that’s pretty much it, can I still use this water if I hook up a filter and check it’s levels or do you think I should just restart the process?