Connecting a smaller lagoon style tank to a Red Sea Reefer 350, possible?

[CrackCorals]

I have a red sea reefer 350 and I am looking for help choosing an option for connecting another tank to the existing system,
I was looking into a deep blue 24x24 shallow reef but I really need some suggestions.

please give me suggestions for a shallow tank. I am not looking to go custom, but if anyone can link me to an existing thread i would appreciate any advice!

 

[Gablami]

I connect a nuvo 25g to my Reefer 525. I drilled an external overflow, herbie style, and connected it to the sump. You can see the second gate valve on the right. I used another Reefer 170 stand so it looks like it’s built into the stand.

 

[CrackCorals]

I still didnt set it up yet lol
can you show me how you set up your drains for the frag tank? i dont know if i can fit 4 drains in my v3 sump