Can you use play sand in your tank? I am talking the type from home depot for a sand box. If so what type?
Leopardess said:There are some precautions to take:
Some are bleached (to make them white) and are not fit for aquariums. I myself didn't read a bag label on a bag of sand from Home Depot. When i got home, I noticed it said "Not for aquarium use" and a little research suggested that was due to it being chemically processed to turn white.
Also, you may want to do the vinegar test. If the sand fizzles, it is likely calcium/magnesium based (and therefore something like aragonite sand) which can raise your kH/gH/pH. If it does not fizzle, it is likely to be silica based and will not alter your water parameters.
That said, you may want to look for Pool Filter Sand. It is safe and is prescreened/rinsed to have all particles be of identical size, which means it doesn't require any rinsing at all. I recently used some for a new tank and there was not a speck of dust in the water after adding it.