Plenty of generic rivals sit in this slot; the soil & growing perlite is the one that behaves. At a glance Type: Perlite Volume: 20 L Bag: Compressed Organic: No Price: à§³7.86 (offer à§³7.28) The part most missed Set up as a perlite-class unit, it does the job without asking you to improvise. In practice Care: a rinse and dry cycle in the usual rhythm keeps it looking fresh. Storage: stows neatly, taking no more room than a loaf tin when out of service. First use: no break-in ritual required beyond a quick wipe and a glance at the label. Reasonable to buy, easy to live with, boring in exactly the right way.