Hi!
My window farm is running for more than a month. The beans ( haricots) begins to make flowers. But the salad just died and my zucchini plants is sick and dry. And I’ve just seen that there is a white coat on the leaves. I tried to plant another one in soil in a little pots with a little reservoir of water and this one is in good health but the one in hydroponie doesn’t go well. What is the problem. I’m using the water of my fishtank and I add some more nutrients in the middle of the week. Since now, I’ve changed the whole tank every week.

Also my salad is not able to grow. They grow very thin and then dies
Can you help me?