i buy egg crate at home depot and put under the rocks. its cheap easy to cut and works great. as for putting them in the tank i just get them cleaned and take my shirt off have a friend hand them to me and gently sit them down in the tank if needed i use a step stool.
				
			 
	 
	 
 
		 
 
		 
 
		 
	 
	 
	 
	 
	 
	 
	 
 
		 
 
		 
 
		 
 
		