I need to increase the frequency of my water changes. Tested before and after. NitrAtes were red, and are still red. Hoping that was 80 going to 40. Only way to know for sure, another change tomorrow. I've just made some changes for the better though. Changing the food - from flakes to hikari mini pellets (much less messy - nothing hits the floor), and going to ramp up my water changes (at present it's at least once a fortnight but will now do weekly or more, much easier with hose!!). Yayness!