I am moving my Geo red heads to a 75 gallon tank from my 30 gallon growout tank and wonder what is the best sand? In the 30 i have 25 lb of caribsea black sand and trying to pick a white base sand now or a little tan would be preferred. So just wondering if Zeo Sand from Lesliepond.com is a good choice for the geo's or is there any other brand that looks better?