I started out with 3 turbo snails and 2 Halloween hermit crabs.. Couple months ago I added 10 Astraea snails 10 nasarius snails and 2 emerald crabs... IMO skip the Halloween hermits and go for the emeralds!
I think it will help.. Especially the crabs.. They are always picking at the rocks.. A lot of fun to watch. I may be adding a cleaner shrimp tomorrow, as long as my lfs has them.. Looking forward to that addition
You use the drip method. I do mine in a bucket with some knotted tubbing starting with just the water you get them in. Then start the siphon and slow it down to a slow drip of your water ( I siphon mine out of my fuge tank). Do this slow drip for about two hours. If turbo/ Astraea snails are part of your CUC then be very sure that they are open shell side down due to them being overturned they die. Then afte about two to three hours add them straight to your tank. Works for me every time with very few casualties! Hope thi helps!
Looking at your pictures you posted at the beginning of this thread I would have to say from my experience of having Algae blooms in the past you have a lot of sediment getting stirred up from the sand bed and clinging to the GHA hence looking like white algae growing. Throw you some emerald crabs, turbo snails, and a good deal of some blue and red legged hermits and they will slowly knock away at you algae problem! If you want a quick fix get you a few lettuce nuddibranch and they will tear that GHA up! Note they also will die when all the GHA is gone so if you get one or two find a friend with the same problem to give them too