I started my tank about 4-5 months ago. At the start chaeto was doing great. So great I was having to dose N03 but now it’s just always dying off on me. Same light same flow. Changed the flow to rotate it, dosed chaeto grow, and still dying. I’ve kind of given up. I don’t do water changes so I suspect some lack in trace elements. I ordered a couple ICP tests over a month ago but they haven’t even shipped them to me yet. My N03 is 10-20ppm and P04 is 0.07. I have one of those square waterproof grow lights off Amazon that I’ve seen people use to make ATS. I can def grow algae so I feel like that might be a smarter way then keep trying chaeto