i will be relocating my 10-12 inch oscars (2) INTO A 75G BY NEXT WEEK, I WILL BE USING POOL FILTER SAND, AND WANNTED TO SEE IF THERE WAS ANYTHING I COULD ADD AS IN A BOTTOM FEEDER TO HELP WITH THE TANK CLEANUP, THESE 2 OSCAR ROUGH HOUSE WITH EACH OTHER AND I DO NOT WANT TO ADD ANY FISH THAT WILL BECOME DINNER OR A CHEW TOY, AND I HAVE BEEN READING THAT PLECOS ARE POOP FACTORIES, ANY SUGGESTIONS?