Pumps

I am using EM Erythromycin in the tank and instructions say to remove either the activated CARBON filter or FILTER cartridge and continue aeration. Thanks !! I am a beginner.

Not sure what type of filter you have. If it is in the tank, then take out the black pebbles but leave the cotton.

http://www.csupomona.edu/~jskoga/Aquariums/Cornerfilter.html

If you have an undergravel filter, the charcoal is in special fittings that go on the top of the tubes. http://www.aquariumguys.com/leescarbon.html

If your filter hangs off the back of the tank then the charcoal is in that filter thingy that slides in behind the wheel. http://www.marineandreef.com/Penguin_Replacement_Filter_Cartridge_Marineland_p/rml01320.htm

If you have a filter that sits under the tank, then the charcoal is the black stuff.

''Well pump and supply tank''

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