Thanks for the compliments! Yeah, the reactor has been a pretty cool addition to the sump. I'll get some better pics up when I get back home in a few weeks, but basically the reactor is tied into the output line of the xp2 with a small pvc barbed tee reducing from 5/8 to 1/2". The 1/2" line then runs through a small valve that essentially regulates the flow into the reactor, then into the reactor, back out to the sump. The line you see in the purigen is how it looks with no valving the flow back. i basically set it up, took a picture, then realised there was too much flow into the reactor. Ideally, the flow should be set to a point where the media stays in a constant state of motion, which means pretty low. Im probably around 50-60 gph through the reactor, so ive still got some head room to play with seeing as an xp2 moves around 150 gph. Im using about 2 liters in the reactor
I used an xp2 simply because i had one that wasnt really being used lol. Any canister should work fine though, but you'll still want a slower flowrate through the reactor, so unless you really need the extra filtration from the canister, the smaller the better(and cheaper). You dont really even need a canister either. Any small water pump will work with these.
Still too early to tell if I would change anything, but once Im online and I can start datalogging all the tank parameters, i'm going to start playing around with different medias in the reactor. Once I get a baseline from water change to water change, Im going to try to turn it into a nitrate filter. If I can just figure out how to pull the 02 out of the water while in the canister, i should be off to a good start. Not that purigen doesnt work well. It does, but i think I can take it another step further with denitrate or matrix. Time will tell.
Good luck with yours however you set it up. On a side note, i own every xp canister except the xp4. I would not recommend it either. Fx5 is almost the same price and is a much better filter. Overkill for a reactor, but better than the xp4. Any small classic series eheim or rena will work fine
Yes I would not purchase an XP4 over an FX5 (I run an XP3 and FX5), I was just using the XP4 as an example thinking you had purchased the xp2 new, but now it makes sense that you just used what you had lying around.
Thank you for the info! I think I will use your reactor as a vicarious guinea pig for a couple months before I move forward with mine haha. Let me know how long the purigen lasts before you need to recharge it.