[usmc121581]

that is beach sand, but we don have to worry bout that cause weve got algae sifting snails, there weird but clean the sand

I wouldn't say that now, because a snail can only do so much, and if it spreads quicker then the snails can eat it, then it will big problem. As for the sand They can be others things you can introduce into the system. Like bacteria or alot of bad stuff. Well good luck!