Okay so this is my main area of struggle when it comes to growing. I know pHing water or nutrients seems simple but I messed up… I use RO water from Walmart ( I make sure its RO not distilled or spring water, RO only) and usually that water comes at about 5.5 pH. I used to use the distilled water bottles last grow before I knew that RO is the way to go but it also came at a 5.5 pH roughly. When I’d use either water in compost tea, the pH would generally end up right at 7.0. At some point this grow, my water was too alkaline and my runoff measured at 7.5. I’ve been pHing right at 6.8 the whole time except once or twice I just used pure water and didnt pH. I’m wondering how I can bring my pH back down so my runoff measures more in the range of 6.5 rather than >7?
I used dolomite lime in my soil mix (prior to planting) to try and help stabilize pH if that helps. I have “flushed” with 6.0 pH water after I got the initial readout of 7.5 on runoff but still got 7.6 after??? Also using Apera instruments pH tester and I calibrated and got the same readouts.
Any help is greatly appreciated! Happy growing.