Apex, reef keeper or reef angel controller

[Bryben1]

I'm looking for a controller for my new setup. Perferably an apex or reef angel. But will take a reef keeper if the price is rite... What's out there?

 

[brunoboarder2444]

https://www.manhattanreefs.com/forum/sale-trade/191756-clear-out-sale.html

I have a reef angel listed

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[ReefMonkey13]

I have an apex for sale.

Apex base unit with Display, EB8, pH and temp probe - $350

It's about a year or so old.