Sweet & Delicious Second DWC Grow

Changed out the Green Poison res(5-25), Fruity Chronic Juice will be tomorrow or Sunday. They are looking good, but I'm hoping they bulk up a bit the next few weeks cause they are looking kinda scrawny right now. Changed out the Fruity Chronic Juice today(5-26) . I think I need to add another fan into the setup. Right now I have a 6 inch centrifugal on the scrubber and a 6inch mixed flow on the light, I was thinking of getting a 8inch Hyper Fan for the light, putting the mixed flow on the scrubber and setting up the centrifugal for an intake. I'd get better temps during the summer and with the mixed flow on the scrubber, I'd get more exhausting power. *UPDATE*-5-28 Today during my daily checks, I noticed on a few leaves that I saw what looks to be the small brown/rust color spots of calcium deficiency. I also got calcium deficit in the later stages of flowering on my first grow. I stopped adding calmag weeks ago because I thought they were getting to much N, so I'll give them a small amount(~150-200ppm) over the next few days to see if they helps. Other than that, they look great and are starting to smell wonderful! **Side Notes** I've been thinking of upgrading some aspects of my operation. They are as follows 1. Bigger 8 inch fan 2. Bigger linear diaphragm air pump 3. Coverting my dwc buckets to either a recirculating dwc system or a undercurrent rdwc system 4. Bigger(5x5 or bigger) better(light proof and layout) tent AND finally 5. Cmh conversion kit to make use of a old reflector, for veg. Some of these are going to happen sooner (fan, tent,and system change) then the others. This has turned into a real hobby that I enjoy doing, while learning a lot, and is really fun. **Update**5-31 Today during my checks, also yesterday, I noticed that their ph were dropping significantly over 24h. Tomorrow I will be dumping both res' if they drop super low again.