Closeup shot of the coils. Most of the surface area is aluminum fins, while the copper is used as a core. Not sure what the blue coating is. There are copper test kits available for $13 online. Not sure about the toxicity of aluminum or whether either metal would actually leach much into neutral...
It's a brand new Danby 70pt. I was also thinking that the ppm might drop after the first few uses, will report back on that later. Though I've read reports elsewhere of people doing this without consequence I'm leaning toward not worth taking the chance just to save some money and effort.
You...
I was thinking about hooking up my dehumidifier to drain into my aero reservoir, but I'm concerned about contaminating the res with metals. The coils look like they're made of copper and aluminum, and the waste water from the dehu measures at 30ppm (for comparison my RO water measures around...
I've been mounting a defense against a big infestation of Russet Mites in my flower room, as well as some thrips and powdery mildew. First I sprayed with Neem oil on top and bottoms of leaves. This only seemed to help with the PM. Then about a week later I hit them with Pyrethrin spray, top and...
I'm getting back into this hobby and starting fresh after taking a break for a few years. This time around I wanted to build a system that paved the way to easy success by making all normal maintenance chores easy, ergonomic, and automated where possible. It's been a somewhat costly build in...
I've been building out a new grow setup this summer using high pressure aero / DWC hybrid under COB LED lighting. All flowering will be done using portable SCROG modules that can be disconnected in seconds and wheeled around like carts. Central res is auto topped up with RO water via float...