I purchased a 6 bucket 3 gallon dwc system and set it all up and my transplant went well and then 24 hrs later they all went limp. So I went and researched and found that I had given to much nutes. So I went with a 1/4 of the previous amount and they came back around and started doing great so it came time to change my water which I thought was every week and it seems that that isn’t quite necessary. So I changed my water and up the nutes a bit and it got droopy again so I was curious to see what my ph was and it was 7.8 and I had it at 5.8 24 hours earlier, Why is my ph going bezerk overnight. Also is it a must to have a water chiller cause my set up did not come set up for one, but it was a highly rated set up. Just frustrated cause nothing is going right.