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What GFO Reactor do you use?

Discussion in 'General Discussion' started by bobsfish, Feb 12, 2014.

  1. bobsfish

    bobsfish Experienced Reefkeeper

    Ratings:
    +3 / 0 / -0

    I have a BRS dual carbon/GFO reactor on both my 60 and my 90. I get decent tumbling from the 90 reactor, but the 60 seems to clog. What reactor do you have? Are there any tricks that you know of to make the BRS reactor work better?
     
  2. ScubaMan

    ScubaMan

    56
    Ratings:
    +0 / 0 / -0
    I use a single BRS reactor for my GFO. I chose to go with a single instead of a duel. I wanted better control of flow with a single. Mine works great. I did try mixing GFO and carbon for a while, but did not like it as the flow changed with time. So I just do GFO via single reactor and a carbon bag for carbon. I am thinking about getting another BRS single for carbon alone, just because I think it may be easier to change, than a carbon bag. Bottom line, I was concerned about water flow control with a duel reactor, you may be finding that your flow changes with time.
     
  3. bobsfish

    bobsfish Experienced Reefkeeper

    Ratings:
    +3 / 0 / -0
    I'm not getting good flow in the reactor on my 60 and I'm fighting diatoms weekly. I'm sure it's related.
     
  4. nickbuol Here fishy, fishy, fishy...

    718
    Marion, IA
    Ratings:
    +17 / 0 / -0
    I have a dual reactor from BRS and honestly, I hate it. Ok, it is more that I hate the pump that they bundle with it. Maybe if I had a lot smaller tank (currently at 120gallon), but in order to get enough GFO in there, I pretty much fill the one canister (minus a little space for the light tumbling). Put any amount of carbon in the other canister and it sort of tumbles still, but at full flow, just barely. So I run it with the second canister empty, and it doesn't take long at all (a couple of days is all)for the flow to need to be cranked to full and after about 2 weeks, it doesn't tumble at all.

    So I guess that the pump is really the issue, but if I had to do it over again, I would get two separate ones with two separately purchased pumps for a little more money, more flow, and better control.
     
  5. ScubaMan

    ScubaMan

    56
    Ratings:
    +0 / 0 / -0
    The key to the design is making sure you have a constant supply pressure. I happen to use my return pump as a supply pump to a single canister. My return pump does not change the pressure (potential) even if there is some other changing restriction somewhere else in the system. The reason I did not buy a dual reactor is because of my concern with a single source, water just like anything else will take the path of least resistance. If one chamber begins to restrict flow, the other chamber will become the path of least resistance. So the change in flow in one chamber will have a direct change in flow in the other chamber. I am not 100% sure about the exact flow of the dual reactors, but is really does not matter. If they are in series or in parallel you will still get a change in flow if the other one starts to clog or restrict. I suggest if you want both GFO and Carbon, that you have them as two singles. I have a big enough return pump that I could use if to feed a pair of canisters.
     
  6. nickbuol Here fishy, fishy, fishy...

    718
    Marion, IA
    Ratings:
    +17 / 0 / -0
    Not sure that I follow your thought process on the path of least resistance when they are in series (through the GFO chamber first and then the carbon chamber second). I can see if there was a T-fitting that split the source to both, and then yes, if one starts to clog, it forces the water through the other chamber.

    In series 100% of the water that goes into the first chamber goes into the second chamber, and 1005 of the water that makes it to the second chamber had to go through the first chamber first.


    Sort of like holding a garden hose with water running. If you kink the hose, it slows or stops water from coming out. That is like what happens if the 1st chamber clogs, nothing comes out the hose just like nothing would go to the second chamber.
     
  7. ScubaMan

    ScubaMan

    56
    Ratings:
    +0 / 0 / -0
    Sorry for the poor explanation. Bottom line, what I am saying, IMO is the best way to control flow through a reactor is to have it isolated and totally independent from another or second reactor. Your hose example is spot on. If one chamber starts to restrict flow, the other chamber will loose flow as well. You loose that light tumble action we desire and need. So, that is why I chose not to go with duel chamber reactors. I look at the tumble on my single GFO reactor in passing and I rarely (many weeks) have to adjust flow. I usually only have to mess with the flow when I change out the GFO. I am not helping you out though, sorry, the question is tips and tricks for a dual reactor. Hopefully someone else can pipe in and tell us how they adjust their dual reactor.
     
  8. nickbuol Here fishy, fishy, fishy...

    718
    Marion, IA
    Ratings:
    +17 / 0 / -0
    I think that the only real solution to an "in-series" dual reactor setup is a large enough pump to keep things moving in the GFO chamber, and then using a media bag in the 2nd chamber so that all of that flow isn't tumbling the carbon.

    I agree 100% that now that I have a dual reactor that I wish it was 2 singles and better pumps.
     
  9. jeremy Acro Addict

    Davenport, IA
    Ratings:
    +836 / 4 / -0
    You can make your dual reactor a single. Just take fitting out between the. And order a few fittings from their site. But I use the dual and have for like 2 years and no problems.I am using the mj1200 that came with it. Check in the top of the reactor where the elbow screws I. And see if anything might be stuck In there. Hope that helps
     
  10. bobsfish

    bobsfish Experienced Reefkeeper

    Ratings:
    +3 / 0 / -0
    Thanks for the feedback. I'll check to see if something is blocking the flow. I like the hose analogy...makes sense. And, I like the suggestion to split the dual reactors ...although that will likely be a last resort. I am using the 1200 pump that came with the kit. Like I mentioned in my earlier post, the dual reactor on my 90 works great...it's just the one on my 60 that seems to slow down..maybe it's just a lemon.

    But, I just got my AWT results back and it says my Phosphates are zero...so, even with low flow the GFO must be working. But the results also said that my Magnesium and Molybdenum are too high, and both can contribute to algae blooms. So, the reactor might not be the source of my problem after all. Of course, I have no idea how to reduce Magnesium and Molybdenum !!
     
  11. jeremy Acro Addict

    Davenport, IA
    Ratings:
    +836 / 4 / -0
    And you really don't need much flow through the reactor for the media to work just barely make the top of the gfo dance a bit. As long as you are getting a slow stream out its working. As you can see by your test results.
     
  12. walker1

    walker1 Well-Known ReefKeeper

    428
    Ratings:
    +28 / 1 / -0
    BRS single
     

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