Plumbing advice 180g two55g barrell sumps

[fijiwigi]

I am wanted to spend some money and re do my return pump / overflow plumbing. Gonna buy a new return pump. Potentially keep the eshopps pf1800 overflow and perhaps add another overflow box. Tank is established I am not going to drill the glass. Want it neat, clean and safe/effective. Considering float safety shut off.

What would you choose to buy/do? Please offer advice. Thanks

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[fijiwigi]

Oops thread title is wrong. It's a 120g tank. Two 55gallon car wash barrells I'm using for the sump. Water overflows into one barrel then into the other barrell where I keep a return pump

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