Do not listen to village experts when they advise you to make the following arrangement for filtering the fresh pumped out water:
This has no meaning
The small tank sitting on top of the two larger tanks is filled in with sand that should filter out the iron (saanim) and let the water fall in both storage tanks. The sand will be fully plugged by the fine rust within 2 - 3 weeks and water will go over the edge.
You will see it everywhere and nobody is bothering that the sand is no longer penetrable, they will do it again at any new house (because everybody does it so).
So if you already have it made so, take the upper small tank down, it has no meaning, sometimes trees are growing there. Better fill up the water in one tank only and let it settle there. In the meantime make use of the already cleared water from the other tank for few days. And once it has almost empty, use again the other tank and this will be filled up. And vice versa.