There are a lot of post wirh 12-18 month old tanks (including mine). My factors:How do you think it got to this point? I wouldn't want to do all of this and then it just comes right back.
- lighting
- got lazy after 8-12 months on WC and maintenance
- over feeding while I was traveling
- used vibrant to wipe out bubble algae and that triggered a sequence of events including GHA and cyano