I had a huge disaster where my whole bio system crashed on what I thought was an established tank of around 1.5 years.. Huge ammonia spike, milky white water and a massive plant die off.. I'm still unsure what could have caused this but that's not the issue any more. It's now been a few months since the crash, ammonia has started to drop (way lower than it was) and I'm getting high nitrite readings which I assume is a good thing and a sign the cycle is in effect again (finally).. I was stuck with just ammonia for the longest time. I have just been told about TSS, I am wondering whether it is worth adding at this stage.. I am now seeing the cycle that I've been desperately waiting to see and wouldn't want to mess anything up any more, but would also like to speed things up as much as possible. I'm still reading ammonia at about 3ppm and have a maxed out reading of nitrite with a small reading of nitrate that has definitely increased slightly from the reading I get from the tap water. Somehow my poor fish have managed to all survive living in off the scale ammonia for at least two months, I'm so happy to see things are starting to move along in the cycle but if things could be sped up at all that would be amazing, I'd hate to loose one so far into this. I have done everything I can to keep them alive, and understand in a perfect situation they would have been moved until it's sorted but unfortunately that's not an option for me. My tank is 240L running a fluval 306 canister with biohome ultimate media. My stock is currently: 6 Corys 7 Harlequin 12 Glowlight Tetras 1 Lace Gourami Many thanks in advance! Casa.