I had one. It helped with algae somewhat running rowaphos in it but I didn't like the shoddy build of the unit. I guess that's what you get for $50. In about 3 months the 90 degree hose barbs hardened and came off on a regular basis. Just barely touching it would cause them to pop off and have water gushing out of the reactor.
It was noisy too leaning against the glass sump. The sump seemed to reverberate the noise from the reactor. There didn't appear to be a rubber seal on the screw on cap. It held with friction. Not a real issue with the lower water flow but in the long run I was nervous about the unit. I was worried about undertightening it and having a leak, or overtightening it and wearing out the seal.
It worked well though considering the price. I just wish that for the $50+20 paid for the reactor and a maxijet pump there was something all in one with a little more quality. There's not a whole lot out there at the same price range for competition so it's a good unit for the price.
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Everything I put in my tank is fully dependant on me.
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