everything was made right[except for the plants]but that's ok
have sense switched to the organic
nutrients and am very happy with them
using Grodan rock wool for now with the new nutrients with a
drip system/drain to waste
once we get some better weather here we have a new room [20 X 26] in an old school house to get the big system going
Here in the UP of Michigan the growing season is very short so the hydroponics work well..we are at the end of the food chain from Chicago and get the last of the left overs[nasty stuff]
Doc.