So you have some time on this. Don't dose the next three days. Check CA, MG, and ALK every 24 hours record results. Then come back and lets discuss when we have data.
Do you also do water changes?
Why? Why are you dosing? What are your parameters? How much do they change from day-to-day? I glanced at your tank journal and you don't have a lot of corals that are Ca/Alk sponges at all.
The IM return pump is pretty powerful on it's own. The MP10 is probably not needed at all for this tank, but that's because it's a species specific tank and carpet nems don't like a lot of flow especially anything direct.
In most cases one MP10 would be fine. In a heavy acro tank I'd go with...
Second tank… this go round.
IM 50 Ext.
Species specific rank for a Red Haddoni.
Current inhabitants: 10” Red Haddoni. Six Darwin Clowns.
Equipment: IM return pump, Kessil A500x, MP 10, 150w heater with an Inkbird. Aqua UV.
For fish per tank the LiveAquaria stuff is a great starting place, but that's ll it is -- a starting place. Then you have to look at the species swimming needs. As mentioned clown are fine in a ten simply because they pick a small territory anyway. Tangs of course need at least four feet of...