We've had this little guy for a couple months now in a 20 high with 6 bst, some RCS, a nerite snail and lightly planted as well as lots of hiding places and driftwood. He's always been very active even during the day. Since we got the guppies, he's been almost completely nocturnal and it makes us sad to not see him all the time. The only other change in the tank has been i used nitra zorb to finally get our nitrates under control. Ph 7.4 Ammonia 0 Nitrite 0 Nitrate 5 Do you think he just doesn't like the 6 guppies in there now?