Can anyone who's a dedicated DWCR grower give me some hints, tips and a nutritional guide? I've swapped from soil to dwcr and spent a shitload on the system but in all honesty I feel like I've wasted my money. $600 just for the water chiller as I got real bad root rot from the water temps getting over 32C under the 1000mh. They're recovering but now I'm sort of confused about what ppm levels etc to stick to. I had them at 750 and it seems they're taking it up because 5 days later it's down to 450-500. Do I add more before my weekly refresh or wait? I'm baffled