This question is mainly intended for our Belgian friends because I want to meter a tank to recover rainwater and I am told that in Belgium there are companies that offer rainwater recovery tanks at prices really very interesting of the order of 10 000L for 1200/1500 euros but impossible to meter the hand on a good address however it is not faults to have to try because it's been several weeks that I seek then if a charitable soul goes through there and would be able to help me it would be very nice

please