I found this free and easy solution for Rainwater harvesting today and decided it to share with you all. Actually the related video was received in a Group. The video also shows this Whatsapp number for resolving any query 9323942388. Here is a link to another similar video on rainwater harvesting https://www.youtube.com/watch?v=EqoAR1aJT1k&ab_channel=IndianGardener.