I'm looking for some serpent stars at the moment, sand star i'll debate on but want to give it enough room. I've blown my rock off three days in a row now, the amount of junk coming out is a lot. I'm going to grab some socks for the sump so i can use them whenever i do it to catch all the junk. I think thats where the extra phosphates are coming from, i have zero nitrates, i actually wish some nitrates would accumulate in my tank.