My tank is cycled and ready, two days ago I got a diamond watchman goby for my 40g tank. He seems to be doing great, but also a little bit shy since it is a new environment. My levels are: Ph- 8.0 Ammonia- 0 Nitrite - 0 Nitrate- 10-20 So far I have dry rock, live sand, artificial plants, a heater, and a submerged filter in my tank. However, I have a good amount no of dry rock, which I feel is too much for a seahorse tank. I also provided an image of my tank. My questions are: Do seahorses require dry rock in their tanks? When I go to my LFS they hardly have any rocks in seahorse tanks? Should I take out the big piece of rock to the right of my tank? Should I take some artificial plants out? Also I have led lights for daytime and nighttime should this be fine?