Our tank is a long, thin 55 gallon. It has been up and running since early November, cycled, and we added our sea horses last Thursday. The water temp is 75, ph 8.0, salinity is between 32 and 34, ammonia, nitrite and nitrate are 0. Our maie is no longer floating, and has changed color to a much lighter creamier color. He is still spasming (for lack of a better word) a lot. Once again, the female is fine. We are very concerned about the water circulation, and wonder if this might be adding to his ailment. When they get in the way of the flow it throws them around the tank. We have turned one half of the under water gravel filter off, and that seems to help but now we are worried about circulation. As you can see, we need a LOT of help!!!