Turbo Snail

Just a quick question Is the turbo snail and nassarius snail reef/coral safe, and of course the hermit crab. Total what is a good number to have for a 55 gallon tank?

I think alot of people go overboard with inverts and they just end up starving to death.

IMO nassarius and conches.

Brown algae on the sand will go away in time. Yours is a new tank that is still adjusting to the new growth of the new biological filtration.
Tell us what it has in it and we can help you determine what else it needs and how much.
BTW, Nasarrius Snails don't eat algae. Don't bother with them right now. The best snails you can get are Cerith, Astrea and a few Margarita Snails.

Yes, you are right. Perhaps a few Nasarrius Snails could be useful but I would not add a Conch right now.

The cause of the problem determines the correct solution.
If I am correct, this is a new tank with relatively clean sand. That's why I asked what's in the tank. A pic would also be helpful.

To answer the question of how many snails for a 55, I would add 20 snails, a mix of these three types:
Astrea
Cerith
Margarita

Later on, as the amount of LR and other animals increases, more snails will be needed. Depending on the lighting, a good rule of thumb is one snail per gallon and less than half as many Hermits. That rule changes as the tank changes over time.

Superglue gel

it depends on the type of coral what is it?

and some clowns

It's nicer to place bare frags on rocks than to have fake looking plugs/discs glued all over the rock structure. Zoanthids can be removed from the plug and glued directly to the rock. They can also be glued to a small or large piece of LBTR/Utah Rock which then goes into the tank and looks like LR.

Utah Rock which has recently gone into a tank, can be removed to do the gluing. It doesn't really hurt much to remove it for a few minutes. After placing it back in the water, turn it around a bit to release air bubbles.

When gluing frags underwater on good LR, I don't like removing the rock because it's bad for it to get air in the holes and pores. I don't put the Superglue tube underwater. Instead, I squeeze a BB sized or pea sized glob of glue only on the frag in the place where the frag is going to touch the rock then quickly set the frag back in the water, pushing and twisting a little to make the glue spread out. Hold it in place for 15 seconds to let it partially set, being careful not to let your fingers touch the glue.

With the exception of Zoanthids and other button type polyps, most soft coral will release themselves from superglue, so I use elastics, mostly. Fishing line or bridal veil material can work where an elastic won't.