I also strongly agree with a regular substrate and plant tabs. Only time I ever had trouble with algae, was when I had a 100% flourite substrate. Now I have a little bit of flourite, but mostly a mix of regular sand and gravel. no algae, happy plants. Also, when I bought tahitian moon sand it was $30 a bag!! And because of the weight of these items, most places online will add additional shipping fees and make it more expensive than it would be locally.