I have a pro clear 125 wet dry 26x16x10 that i want to run without the bio balls. So the question is , can i put lr in place of the bio balls and should i also put lr under the bioball section so some of it is submerged? I dont have the blue filter on the bottom either so should i put that in? I searched and searched and searched without much luck, btw its for a 55gal tank so no option of doing a 20gal sump.:thanks: