EDIT: I got a brand new 40 gallon hang on back filter, I checked it it is clean and I changed the cartridge but it is filtering funky I think the might add to the cloudy tank but I don't know. The filter sucks up the water but then doesn't push the water all the way to the other side of the filter except a little it drips, the rest of the water just comes out the same section as the pipe. Could this be maybe it is getting stopped up by the diarrhea did I not push a piece in all the way, if anyone has any ideas please help thank you so much??!
My tank is a 20 gallon soon to be upgraded, it has a above tank basking area, a uvb and uva light, a hang on back filter for a 40 gallon, a fake log like cave ordainment, a big rock, black and glow light gravel, and medium size small rocks.
If anyone has any advice or questions that would help determine the problem just let me know, thank you so much!!

