Quick update:
Started the main sand clean up and siphoned out quite a bit of it last week with a 15g water change. I decided it was safest for the mandy's sake to reastablish a sand bed. Added one bag of clean sand to one side of the tank (put all the dirty sand to the other side) and still need to get rid of the majority of the dirty sand on the other side, then mix in some of it with new sand to seed it.
GHA is majorly growing on the gsp coral which is a shame. Not really much I can do for it at this point as my options are limited due to finance. Can't even pull it off without damaging the coral.
Decided to sell off one oscellaris as I think 6 fish is too much for this tank. One or two more WC's until I can rescape I think.
Water params are still not ready for coral, so will have to wait and be patient.
As a side note everything eats out of the food stations I set up. The blenny is the fattest pig I have ever seen! The mandy while not fat does not look emaciated either, so still crossing my fingers on that one.
As a side note my blue damsel in a different tank died today of unknown causes
