This is why I call them experiments.  There are several variables I will need to identify and isolate to see if this experiment is an ultimate failure, or just another data point in my quest to turn fish waste water into tasty vegetables and greens.  Root development for spinach wasn’t expected to be as prolific as with lettuce or kale, so the root system doesn’t look terrible.  There was still plenty of water left in the mason jar, so that wasn’t the issue.  At this point it is either the lower nutrient level of the fishwater compared to the mix that might be used with hydroponic nutrients, or it is something  to do with heat and light.

The experiments shall continue !!!

Jeremiah 8:4
New International Version
“Say to them, ‘This is what the LORD says: “‘When people fall down, do they not get up? When someone turns away, do they not return?”