Originally Posted by ggm
I removed the front cover into the gray tank, The front cover is about 4 inches round, this then goes into the waste pipe outlet. no real water came from this.
I will try and remove the u trap on the sink in the toilet.
does anyone wash out their tanks?
Your post does not make much sense. There is NO cover to access the 2 down pipes from the sinks that is round. The down pipes from the sinks are thru the main floor into the top of the tank. Why remove the P trap??? What are you trying to accomplish by doing that? Doug