I just bought some playsand from home depot, but I see that it may not be a good choice. Why exactly does it cloud up? I can return it for some sandblasting sand, but it's white not black. They may have pool filter sand; which is better, the blasting sand or the pool sand? I just got my 75 gal today and test filled it. I am about to go out for more supplies; including looking for decor, plants and such. I will try to wait for a reponse from you before I head out. Thanks, Tom