Wannan substrate yana magudana da kyau, yana barin fam ɗin ciyarwa ya ci gaba da kasancewa a kowane lokaci. Faɗaɗɗen yumbu baya ɗaukar ions daga maganin gina jiki. Yana da sauƙin tsaftacewa tsakanin girbi don sake amfani da shi. Idan babu ƙwayoyin cuta a cikin girbi na baya, to, kurkura mai sauƙi ya isa ya kawar da matattun kwayoyin halitta. Idan ya cancanta, zaku iya jiƙa shi a cikin bleach kuma ku kashe yuwuwar ƙwayoyin cuta. Wasu farin gishiri na iya ajiyewa a saman yumbu. Lokacin da ruwa ya ƙafe, ƙananan adadin ma’adanai suna fitowa daga bayani kuma ya bushe. Wannan ba matsala bace. Algae, sau da yawa kore, wani lokacin launin ruwan kasa, kuma na iya girma a cikin substrate. Za su yi gasa tare da tsire-tsire don iskar oxygen da abinci mai gina jiki, amma ba mai girma ba.
Girman granules don substrate shine 4-8, 8-16 mm ko cakuda duka biyu. Yawa na iya bambanta daga 0,5 zuwa fiye da 1 g / cm3… Abubuwan da ke cikin ruwa ba su da ƙarfi kuma kawai wani ɓangare na wannan ruwan yana samuwa saboda tashin hankali. Abubuwan da ke cikin iska suna da yawa sosai. Faɗin yumbu granules suna da ƙarfi sosai, suna da pH na 7 kuma ba su da ƙarfin buffer. Suna zagaye ko kuma ba bisa ka’ida ba. Ƙarshen sun fi ƙyalli, suna samar da wuri mafi girma tsakanin iska da tushen. An yi su musamman don substrates. Zagaye da aka faɗaɗa yumbu yana aiki iri ɗaya, amma bambancin girman girma a bayyane yake.
Fadada yumbu (kumbura lãka granules) Abu ne mai sauƙi wanda aka samu ta hanyar harba yumbu ko slate. Don shirya wannan ƙasa, yumbu an ƙera shi a cikin granules kuma an harba shi a cikin tanda a babban zafin jiki (1200 ° C); iskar gas suna faɗaɗa kuma suna samar da pores a cikin yumbu.
