WW Auto DWC grow - The Second Grow!

So it's early in wk 5 and plant seems to have somewhat recovered from last weeks drama with PH fluctuations or w/e it was. I didn't have the balls to go hard with the pruning and just kinda cleaned them out. Newer growth doesn't seem to have problems so far. PH has kept really stable after I started swapping out fluids more frequently. We're obviously not gonna break any records with this one so i've been chilling and doing some reading on how to prevent this in the future. I'm thinking about swapping the air stone with just water pump that's gonna make ripples on top of water. Air stone seems to warm up the solution too fast and probably plays part in fluctuating PH, we'll see.. Also there's the possible root problems so I will have rootguard or something with positive bacteria in future for this. I still wanna keep this somewhat organic and try to overcome this with better chilled solution Plant is starting to show pistils so it's also time to try out sturdier mix. Upped micro/bloom a bit since they contain most of magnesium/calcium/potassium in case the leaf problems come simply from that. Also added growth excellerator which I didn't have in last grow ("contains mix of growth stimulating seaweed and vegetable proteins and essential herbs") Interested to see if it actually does anything. PPM for whole thing is bout 350 but i'm not gonna swap it all at once. Training is still in progress so maby pictures about that in couple days along with progress. In case there's someone interested, here's some useful links PH101: https://www.youtube.com/watch?v=X5vLME0N-54 Dissolved oxygen: https://www.youtube.com/watch?v=dntOEpPqMOo https://www.youtube.com/watch?v=uHjvUx4U17Y all of these: http://www.just4growers.com/blog.aspx