Originally Posted by isochronism
Tekkguy, How do you keep the baby shrimp from going into the filter area? There is a small inlet hole near the bottom and one half way up, then the wide grated area at top which extends below the water surface. I thought about cutting small pieces of soft sponge to fill the two small holes. My Spec 2 Gal has this as well. (I also have a Spec V) I do like these Fluvals!!
I have my substrate sloped up high on the filter end. The substrate is about half an inch below the intake hole. I wedged a small piece of clear plastic between the substrate and the wall. Suction and the pressure of the substrate holds it in place. Since the plastic is clear, it's nearly invisible.
The intake at the bottom is only there so the pump doesn't run dry if the water level drops low. I don't let mine drop low. I haven't bothered covering the top intake, though some sponge and fishing line could do it. I figure if they are small enough to get in there at the top, that's where all the good eating is.