Day 42
Ammonia 4ppm
Day 43
Ammonia 4ppm
The water change and addition of fish food seemed to have little effect.
I have started trying to source some mature media - I've contacted the person who is listed under London in the relevant part of this site and I have a blog of this fiasco which has had a comment on it from someone who may be willing to donate some. That might be my best option.
Also, is it time to take out the poly/carbon pads? Last time I asked I was advised against this as there was concern there might be some bacteria seeded on them but that looks unlikely now. Also, it was mentioned that they also filter out physical particles and the like. They are two thin pads (black on one side, which I assume is where the Carbon used to be) that fit infront of the main white sponges. Maybe just take one out? Pointless operation?