i have a few questions about water. I've seen posts about water (mainly dealing with cal-mag issues) before. My question or questions have to do with water storeage. In the discusions about cal-mag isuues, many thought water out of the tap is better than RO water, mainly because Ro water contais no calcium. I've been useing Ro for years (mainly buying gallons of distilled water) which has worked great, but costs are becoming a factor. I recently tested my water out of the tap and the PH was about 6.5 to 6.7. Don't know PPM. I noticed on Subs video he had a blue barrell that looked like a water storeage tank by his outdoor garden. Then on his last video he talked about using water staight out of his tap since the Ph was acceptable for him. Now my questions. If you use a storeage device to store water, do you need a airator? I assuse using a water tank to let the chlorline disapate (over a few days?) is the best way? Also do you need to cover the storeage tank to keep algea from forming? This is an issue I have great interest in, so any advise would be greatly appeciated.