as i stated reset it up it went through its cycle (nitrite, ammonia readings peaked as usual) after cycled added couple more fish as we all do e.t.c and never had readings of ammonia , nitrite e.t.c since
freaky fish....maintenance in the last 2 weeks has been 40 to 50% water change every 2 to 3 days (before this i did 10 days of 50% water changes every day) change wool weekly and if the sponge need cleaning rinse in tank water and straight back into the sump..