Well I had thought you could use regular play sand from one of the local stores too but from what I have read, reg play sand will promote algea.
This is a common misconception. silicaTES inthe water column promote algae growth. silica based sand does not.
The comments on argonite based sand acting as a Ph buffer are correct, silica sand will not provide you with the buffering capabilities that a calcium carbonate based substrate will (such as CC
or argonite sand)
I highly caution AGAINST the use of NON-playsand-sand such as Quickrete cement mix sands. In the US, "Play Sand" must be cleaned of contaminants and sterilized before it can be marketed as "Play Sand". Cement mix sands do not and can often have many things you do not want in your tanks chemistry.
If the sand you're considering is marked with "sterilized play sand" it should be "safe" for your tank. But, as you already know, argonite sand is much prefered.
on a side note: where in TX are you located? close to a coast line anywhere? Some areas allow a limited amount of sand to be taken for "personal use". if thats an option, research local laws and get yourself a few buckets.