Bio Gas Slurry Pumps

Good Morning Friends
I am interested in Buying Cow dung slurry pump to start slurrygation. I have checked with market . Kirloskar Etina and other models from Impacttechnologies, & Thumba agro(Tamilnadu0. Each one is around 22K. I request seniors to advise me.
My farm is situated at Kodihalli, Kanswadi-Madure -Doddaballapur. I have started using Natural farming techniques to reduce my input costs. I gow guava, Lime, sapota & mango. I also need amrketting help from fellow friends. My holding is about 3.5 acres…