So big snails are the only ones that would survive in there. i know for a fact gobys and blennys wont. I put one it and took him right out and got store credit for it thank god. Someone told me sand sifter star would make it. Actually i have had them there for 6 months with no problems. lionfish, huma trig, clown trig and undluated trig, yeah, i know the undulated will turn into a pirahnna. but i have had no problems just yet. the very first min i see there is im just going to returen him back. i know the store owners real good. The ph 8.2. amonia.0 nitrite0, nitrate 20-30, salt 102.5. 10 percent water changes every sunday. just wanted to know what algae eater i can put in there. i get patches of brown algae here and there. thank you. anyone else any advice of any i can put in there with them. The lionfish is doing fine, it loves krill.