Getting back in the groove! (+ a question)

[hermitcrabdc]

After thinking things over following two crab deaths, I've decided to get my tank back to par and hopefully get some new crabs here soon. I considered calling it quits but I've put so much time and money into the crabbies that I don't think I could bring myself to do it Plus I'd miss hearing then clanking around the tank at 4 in the morning, haha.
Anyway, Luca seems to be doing okay. I think he's due for a molt here soon, he's been very sluggish and is looking very ashy.
So, before I find him any friends, I need to get the tank redecorated and such. I have one question before I can do anything. There's this green stuff in the sand. Should I replace the sand or is it okay?

[PinchersAndShells]

Looks like algae, which isn’t harmful at all. Algae grows in my tank on occasion, and it’s usually just on the top layer of substrate along the glass so I just wipe it away. Good luck on the redecorating!


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