Thier catalogue is drool worthy and the small nano reef tanks with the LED lighting are utterly must have, if I ever start again they would be my supplier of choice. I've never seen any prices mind you. But Olivera has done a superb discus tank with the substrate.
I`ve been using Elos Terra in this http://akvaforum.no/akvarium.cfm?id=9801 nano.
Nice substrate, similar to AS in term of nutritional value I think.
Cost prohibitive though, 85Â£ for a 15l bag. But thats one of the disadvantages of living close to
the polar circle No ADA stuff available here in Norway, shipping is too expensive aswell.
Elos got a very good importer in Stavanger which might be helpful if anyone would like to try the brand.