Installing the perilstatic pumps

I've bought 5 perilstatic pumps on Taobao from Kamoer (KPP-S06-DG-C0). They are quite cheap and the only drawback is, like all perilstatic pumps, the tube has to be changed every 6 months or so. You better order some silicon tubing at the same time.

The big clear IKEA Trofast container that was helping algae to develop will now be used as the solutions storage. An additional small Trofast will get the pumps.

I've drilled 5 holes (30mm diameter) in zig-zag (4 cm far from each center, the two lines are 2cm far from each other).
5 holes will be drilled for the silicon tubes to reach the bottles stored underneath. And one more for the wiring. I'll put the electronic board with the TIP120 transistors and the Arduino in that level too. You'll need another hole to reach the motor poles.
I've selected 12V pumps because I'll have the solar panels feeding a 12V battery system, so it's much simpler that way.











The system can add pH+, pH-, nutrients A, nutrients B solutions to the circuit. One water jar will be added to the system to flush or add water to the circuit.
The flow of each pump need to be calibrated as it depends on the section of the silicon tube. So for the water jar, you better have a bigger section (-S10).

Maybe I'll add the batteries for the solar panels in that tank too.