Having to feed every day and low flow on top of that has really made a mess of my tank. Its got hair algae and cyano all over the place. Even with the canister filter its not going away, maybe because it doesnt directly effect the water flow? anyways, i need something seahorse-safe to eat this hair algae and im thinking a sand-sifting starfish would do to stir up the sandbed enough to help with the cyano. If the sand-sifter wont work then ill leave the job up to the high fin banded and yellow clown gobies ill be getting in a few weeks.

I just need something, after i got rid of the emerald crab everything went all down the drain algae-wise. Help me?

A dwarf Seahare...... but ya gotta remove your macro. I had a good relationship with my LFS. For my small tank I wanted a small emerald. So I bought one when it was really small and then when it got to big for my tank I would trade him in for a smaller one again. They were more than happy to allow be to grow them bigger for them and if they died in my care... oh well, I paid for him and I would then have to buy another small one.... good deal for them. You could also get a small turbo snail. If the hair is too long it could be too tough for any of these critters and they won't want to eat it. If that's the case, prune it down via manual extraction and then they should take over the job. A lettuce nudi will also work but I hate to recommend them... they don't do so well normally.

How about some yellow legged hermit crabs? They are suppose to be good for algea. I have been going to purchase some but, haven't done so as of yet.

the only hermits i'd even CONSIDER recommending for a SH setup are the true scarlet reef hermits (the ones with the yellow eye stalks), and even then, i advise caution. they're the most docile of the hermits, but i've still seen them grab SH tails.

Look into a gold rim cowrie. The are very good at eating hair algae. They however are slow but very thorough.