[Delphinus]

You can try DIY'ing one, they're not too bad to make.

Brand names reactors seem to be kinda pricey, although there are these Coralife ones now that don't seem to be too bad in price. I haven't seen one so I don't know how solidly they are built.

The two ones I've got now, one is from OA, and one is something somebody made that I bought off a fellow Canreefer (not sure who made it originally, looks almost identical to the OA model except for a few details that give it away as a DIY job). The two that I made, were really too big, one of the lessons I learned over time is that sizing a reactor appropriately to your system is important, in some cases bigger is not necessarily better. In fact the one I'm using on my 75 is pretty tiny, only takes about 1/2 container of ARM to fill it completely, and is doing a better job than my bigger reactors did, of maintaining levels without adding too much CO2 into the tank.

So for brand name models there are things like Precision Marine, Schuran, Barr Aquatics. Then there are the "Canadian Vendor fabricated" ones like Ocean Aquatics. Then there are the "locally fabricated" ones done by local Canreefers. In terms of getting the job done they're all good though.

HTH..