I have a few Ramshorns happily roaming around in my gravel substrate tank, I popped one in my sand tank to see how he'd go... he didn't like the sand very much at all... While I've been keeping this tank minimally planted some green spot algae has started to come back. I hope to find MTS locally in the near future to help keep the sand turned over, but what would be a good option for patrolling the glass? Locally (in Aus) I've only seen Ramshorns and Mystery snails, none of the fancier ones I read a lot about on here, but, I'm sure if I searched a little harder I'd be able to hunt them down. So, are there snails who will happily walk across sand? ...or do they just learn to hang on to the sides better so they don't fall off?!! Thanks.