My new tank plan & How should i plumb my tank?

[Chin_Lee]

Tarolisol
I wouldn't consider using a mag 18 for a 5' skimmer because its not pressure rated. I have a 4' dual beckett skimmer and I had a mag 18 AND a mak4 to the injectors which worked well combined. I have changed the configuration since and I got a Iwaki70 teed off to both injectors and thats working well as well. You should consider getting a pump thats pressure rated for that 5' beckett skimmer.