I've tried the ones in newham court and wyevale garden centre (by the same name) but wasn't impressed, especially with the one in wyevale...lots of dead fish. Maybe the one in canterbury is different...I will try there. Thanks
So far, I have used pets at home in chatham as their tanks appear clean and no dead fish so far! The staff there really vary though...recently found one who seems to know a fair bit but none of them ever mentioned fishless cycle....in any shop for that matter.