BioU is an all natural product containing extract of the desert yucca plant (Yucca schidugera), known for its stability to bind gases including ammonia and hydrogen sulphide. Unlike most yucca products, BioU also contain enzymes and beneficial bacteria (Bacillus subtilis). Nothing is wasted when BioU taken, but everything is put to good use. It is completely unaffected by all antibiotic growth promoters and does not interfere with their use. BioU reduce ammonia and H2S gas levels in ‘aquaculture system’. Solids in slurry are broken down more quickly because the sarsaponin in BioU increases beneficial bacteria. A surprising spin-off to this activity in the sludge is that sarsaponin also seems to act as a natural growth promoter, possibly by conditioning the absorbent cells in the gut and/or by reducing surface tension at the point of absorption.