I am in the process of rescaping my 1200L High Tech Planted Tank and I am thinking of adding some aquasoil as I currently only have pool filter sand. I tried some aquasoil in my low tech 5 gallon tank (UNS controsoil) and the plants are doing so well without any water column fertilization. I feel my plants could only benefit from having some aquasoil, it will also help fill in the gap when I lack in my fertilization. So I am deciding between fluval stratum and UNS controsoil as they are the easiest to get in my area. The fluval stratum costs $38 for a 10.8L bag and the UNS controsoil costs $55 for a 10L bag. I would need to get about 7 bags of either substrate. Is the UNS controsoil worth the extra cost or should I get the stratum? I hear mixed reviews on the stratum.