Ran a test set today at 6 days wet and have .25ppm NH3/NH4. Took the time a rainy Sunday gave me and cleaned my Eheim Pro II 2028. Replaced the fine pad and coarse sponge placing both in a pan of tank water. Caught most all the canister water in a 5g bucket also.
Pulled the second basket out of the sump and replaced the coarse material with the used filter pads and poured the mum water in the sump 1st stage chamber. This should jump start things