Is there any difference between the silicone that you can purchase at the Aquarium store and silicone that you can buy at Builders Square or Lowes (commercial type)? The biggest difference I've noticed is the price. It states on both types that it's 100% silicone. I'm building a cave and I'm...
I've had this filter for a couple of years now and just use filter pads with carbon in between the two top filter pads and I've never had a problem. The water is crystal clear. My question is what other options do I have?