I agree I won’t add any chemicals.Nassarius snails are great for churning the sandbed and cleaning up left over food but they do not consume algae/diatoms/dinos. I would get a few Trochus and Cerith snails to help keep thing in check as you manually clean the tank. They will not clean the tank for you. They will eat new algae as it forms so they will reduce the reoccurrence of algae and help clean up the inevitable film algae. I agree with the others, avoid chemicals or any 'quick fix' as much as possible.
will get a tooth brush and put in the manual work on the rocks.