i have easy access to a supply of reverse osmosis water. At the moment i am using water collected from local stream , (ph7.8 and as pure as it comes, they make whisky from it round about here) with no added nutrients except a little 10-4-1 house plant feed during veging. I'm now 5 days into 12/12, and plan to feed plants with a comertial bloom feed, my question is...if i use the ro water, will i have to add other or extra nutrients(other than the bloom feed) to compensate for the nutrients(if any) that are in the stream water. I would like to use the ro water as i'v read that it is benificial, and at least it will lower the ph..............what d'you think please?
I would use the RO water. Chances are the PH for it are much better than the stream @ 7.8, which is way too high. I seriously doubt that there is an appreciable amount of nutrients in the stream water. I would still add nutrients to my RO water. If you add anything and how much is your now your decision.