Alk is too high
Temp is too high, put a fan over the tank to keep temp stable.
TDS from Lfs is terrible. My faucet un filtered at home is 7. Your 5 stage will fix that and help the tank a lot.
Be patient. That is key. Slow changes over longer periods of i
If I do this procedure, my nitrates and phos will just stay at zero though. And the corals will remain in a starved state . I guess what I’m struggling to understand is when will the nitrates and phosphates begin to show up. When I had a freshwater aquarium many many years ago , the monthly water changes were needed because the ph would drop , nitrates would show up , due to the large bioload and because I guess the tank was established. Are you guys saying that basically it takes a few months of a newly stocked aquarium to start showing an increase in nitrate and phos levels? Thank youLooking at your tank you have just a few frags, you really don’t need to feed
Anything except your fish right now, and with those few corals a regular waterchange would handle the needs of dosing for now, I’d cut feeding back to just your fish, cut out the reef fusion, but keep testing your alk at least every few days to make sure it’s not dropping. For the algae I’d pull out a rock one at a time and scrub it clean in some old tank water, then do a nice water change after your Rocks are cleaned up. You can Use some hydrogen peroxide on the algae to kill it too. Best to remove as much as possible so it’s not dying off in the tank causing more algae to grow.