I waited it out and all seems to be well. What ever it was has run it's course. I think the last batch of fish had a sick one in it because the plants are doing great. It is definitely not the water.
The plants are not as thick as I thought they would be but they are growing very well. The tall plant in the back is the basil.
The oregano is on the right and is still a little small but doing well.
Nice leafy lettuce.
Now back to the beginning. More leafy Lettuce, Basil and Oregano.
The only thing I did different this time is add more seeds to the containers and I did not separate the leafy lettuce seeds. Can't wait to see how this next batch turns out.