Trying to get more eco friendly in the home. Washing power/Washing up liquid / cleaned products. I did make my own laundry liquid, but as we live in a hard water area it really hasn't been effective in the cleaning stakes. Have come across miniml online, which have eco friendly laundry detergent etc and you can return your empties. Anyone used this products? Is the laundry detergent actually effective in hard water?? can't seem to find any reliable reviews online