hi, my gf just purchased a used 100g tank/stand and some sort of filter? from craiglist and i need some help on how to clean it and how to set up (what i think is) the filter. first of all its pretty dirty with what looks like salt maybe and then a bunch of dark red spots as you can see from these pics:
i was wondering what would be the best/most efficent way to get rid of this grime (it seems to be stuck on there pretty well) without scratching the tank or using any harmful detergents? the filters are also covered in this stuff (as seen in this next pic), can i just leave that there or should i clean both parts of the filter as well?
ok, now on to the next step, can someone tell me what this thing is, and how i would go about using it?
the second part of it that i placed on top of it so you can all see attaches to the other side of the part that is hanging on, (it goes inside the water) and the guy who sold it to us jsut told us that i can adjust the height and that is how how the water will go in my tank? also, the part that hangs on the back seems to have two seperate compartments, one which is empty (am i supposed to put bioballs in there?) and the other side has a pipe with slits cut out in it that i am guessing the sponge goes on. the pipe then extends below the box to a tube that im really not sure where it goes (to a sump perhaps? but then how do i get the water in the sump to return to the tank?), here is a pic:
that is pretty much it for now, any and all help is appreciated, thanks.