Then you will see two possibilities for connecting the coolers to the circuit. One via the G1/4" connections on the top and one via 5/3mm hoses. You cannot use the G1/4° connections with your setup. You would need more space between the GPUs. Therefore, you can only use the 5/3mm hoses.
For this you need the MCX adapter:
Shop Link MCX
Flexibilität und Design bei optimaler Performance! Der Alphacool MCX 2x Verteiler aus Acetal bietet diverse Einsatzbereiche. Er eröffnet die Möglichkeit, Alphacool's aktive Backplates oder MCX Wasserkühler einfach in den...
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However, the water runs through the cooler parallel to the rest of the loop. However, this only works with a good flow. With 4 coolers, radiators and several MCX adapters, one pump will hardly provide a flow. Therefore, I would generally recommend two pumps here. Otherwise, the cooling performance will not be very good because the water moves too slowly.
Regarding the terminal with different cards. The side with the connections are close together with 4 cards. Normally, you make a direct connection. But with different cards, the terminal of one card is not flush with the other card. Therefore, it is difficult to connect them. You might have to work with a stupid angle. Alternatively, you can use other terminals that give you more space and room to manoeuvre, such as the following terminal. With this, you can work directly with angle pieces and it is then easier.
Regarding the terminal with different cards. The side with the connections are close together with 4 cards. Normally, you make a direct connection. But with different cards, the terminal of one card is not flush with the other card. Therefore, it is difficult to connect them. You might have to work with a stupid angle. Alternatively, you can use other terminals that give you more space and room to manoeuvre, such as the following terminal. With this, you can work directly with angle pieces and it is then easier.
Die klassische Ausrichtung der Anschluss Möglichkeiten bei den Alphacool Eisblock Aurora Grafikkarten Wasserkühlern ist vertikal. Wer eine horizontale Ausrichtung bevorzugt, kann seinen Wunsch jetzt mit dem Alphacool Aurora Terminal Flat...
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Sorry that i cant show you some pics, hard to find some for such a construction.