Ya, it works better if you take the top off, and just put the inlet hose right onto the standpipe. Then you just let it overflow into your sump. This way you can use the standpipe to "plunge" it twice a day. Provided you have room to plunge...depends how much rock you need to put in there...?? You might break the bottom plate in the TLF reactor doing this too, so you might need to beef it up with a custom cut acrylic one from your local CNC shop.
