Seramis Clay Granulate
Seramis clay granulate hydroponic grow medium is the new kid on the block that's incredibly popular in Germany. It was originally designed as kitty litter, but don't let that put you off - all our bags are new, fresh and have never been anywhere near a pussy cat! Seramis drains very well, but the smaller grain size (compared to clay balls) means that it holds more water and therefore less frequent feed cycles is recommended. Because the granules are finer there are less air space between them too, so for best results add aeration with an air stone or air curtain.