I don't like the drooping already, even after just one watering. Is there any CalMag in the mix? You said you split some with distilled. Perhaps 1ml/g CalMag. There is really no way to know what is in your water unless you have it tested......what's that 300+ of in there? And what did the Brita do since the number rose instead of dropped but your plants weren't drooping before weret they?