double check it wasn't one of the 'mushy' varieties
Akadama is a natural product, surface mined. baged and shipped.. There are mainly 2 varieties, soft and hard, soft comes from top layer, hard from the deeper layers, the deeper they dig the harder it gets. Probalbly the batches rated super hard you now and then find in the trade. But still hardness is very relative and hard to say how hard hard realy is, obviously. But your best chances not getting a mushy variety you beter go for a hard version.. I've been using it for several years now, 2 tanks are over 2 years old and still i have little to complain about, sure it gets softer over time, i guess all clay finaly does if not baked into ceramics.. The more you poke around in it the mushier it will get.. My 50 cents, are you the constant rescaping type, not sure if Akadama is the best choice... For long term low tech setups it is ideal and very consistent soil..