First post but have been lurking for awhile. I have a few small containers with netpots in them, my plants (Tomatoes and Peppers) are about 3 inches high. I have been using Botanicare Pure Blend Pro and following there feeding schedule. It shows that I need to double the amount this week, my question is can I just add nutes to what I have or would it be best to just mix a whole new batch and switch it out? If I had to guess it would be the latter. BTW is there any harm in watering some of my other plants in my greenhouse with the used water and nutes? Thanks in advance and Merry Christmas from Dallas Fort Worth!!!