Sorry to hear about the clown. When I had a small group in my 170, I would hear a splat once in awhile and find a clown had jumped out. I was so lucky to have been there. Anyway, I got a custom made OctoLid.
If you lost the little clown then the remaining clown is female. With the size of the tank you could add 2 clowns but do not add a bonded pair or the old female and the new female will battle it out. How ever many you add just be sure you do not add the biggest from the group they come from to be sure all the added fish are males.
Will do, it surprise me - I’m changing 5 gal per week in 40gal tank , fritz salt - should be enough to replenish loss if salt has enought, isn’t it?
Anyway - should I look at changing something besides water changes?
I feed a ton too and my phosphates drift up. However, I don't worry about it and just let it do its thing. I rather let it drift up to detectable levels, alongside my nitrates, than to worry about starving the corals. My AFS goes on 1x a day and I feed 6-7 cubes of frozen on the weekdays. On the weekend, the AFS kicks in twice daily.
Still bottoming out on nitrates at 0.2 ppm and phosphates at 0.03 ppm. Can't seem to grow chaeto either at the moment.
With big water changes like that, and not running carbon/gfo/etc, your trace elements
should basically match your salt mix.
My opinion : Don't worry about the trace elements. But if you want to, you may need to switch salt mix.
Corals look pretty good to me!!
But dosing Nitrates is easy (potassium nitrate or calcium nitrate) if you want.
I am not sure I would drop nopox suddenly. Slow changes.