I want to tear my bichir tank down and give it a good cleaning as I have neglected it some. I also want to get it outside to paint the back. I was thinking about changing the substrate from gravel to sand. I have some gray sand left over from my SW tank and if I can find another bag of it I would like to use it in my bichir tank. I just want to make sure that the type of sand that it is will be ok for FW use. Also, will it be ok to use with FW plants? I think the granular size is large enough that it won't compact too much around the roots but I can't be sure. I will include a link so you can see the sand that I am talking about. Its the gray coast. Thanks.
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=8119
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=8119