I was watching your cast with Steve and am trying his Hempy Pot mix. 60% Coco, 20% perlite and 20% worm castings. I've chosen Jack's 321 for nutrition and I'm trying to find out if I will ever need to flush the plant. I don't think I would water to runoff as I put the nutrient water down the pipe. So in short, will I ever flush the plants to reduce salt buildup or does this not happen with this method? Thank you for any insight. Mike