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  1. nsamouroux

    Closed Loop

    That's OK, I forgive you. But you're still a goober :D
  2. nsamouroux

    Closed Loop

    Don't make me drive over there and hold the laptop up to your nose Saltyfish :) The link I posted was a propeller modification rating test VS the stock MaxiJet pumps. The ratings I pulled out and posted were for the prop-modded MaxiJets specifically and show that the rated GPH is much higher...
  3. nsamouroux

    Closed Loop

    If nothing else, it does even out the playing field a bit more for the flow VS energy savings argument in the "closed loop or powerheads?" argument. When I was first doing the math based on advertised ratings / numbers, the powerheads were a clear-cut and obvious winner. Now, with this info that...
  4. nsamouroux

    Closed Loop

    Awww, you're just a quitter Saltyfish. My popcorn wasn't even finished yet and you already throw in the towel? Pfffft. I was just starting to have fun here!
  5. nsamouroux

    Closed Loop

    For those of you who are lazy or link-clicking impaired but still curious: Advertised flow rates for Sea Flo MaxiJet mod products: Sea-Flo 1200 For use only with a Maxi-Jet 1200 pump. Increases flow to approximately 1200-1400 gph. Power consumption after installation approximately 14 watts...
  6. nsamouroux

    Closed Loop

    By my initial interpretation of the testing done in the Advanced Aquarist article I just linked, they are indeed basing the advertised flow rates on total flow through the pump rather than just output. The advertised "flow" of the MaxiJet prop mod is close to double what they documented in their...
  7. nsamouroux

    Closed Loop

    Well now, I found some other documentation on the prop powerheads in the form of a review of the various prop modification products for the MaxiJet pump line! http://www.advancedaquarist.com/2007/12/review1 A little ways down the article they start to discuss flow rates for the...
  8. nsamouroux

    Closed Loop

    A few people in the thread did know who he was actually :) He just didn't broadcast it, which I think is reasonable given that he probably doesn't want to be accused of advertising or whatever it was earlier in the thread when we were talking about a possible bias due to their product line. I...
  9. nsamouroux

    Closed Loop

    Yep, my Koralia Magnum 8 pumps are rated for 3250 gph (total flow, output, gravity distortion, whatever!) at 18-19 watts. Of the four pumps I have in use, two of them draw a steady 18 watts when running, one of them draws 19, and the other one (in my 100 gallon tank at the moment) bounces...
  10. nsamouroux

    Closed Loop

    I'm sure anyone that has used one of those Quiet One pumps they carry at Petco / Petsmart can give us an entire dissertation on just how much that particular brand of pump sucks :badgrin: Roscoe, I actually agree with you about powerhead usage, which is why I used them on my tank instead of a...
  11. nsamouroux

    Closed Loop

    It should be a simple test... Got a flow meter of some sort? Stick it directly in front of a Koralia / Tunze / Vortec at full blast and see what numbers come up :) I'd do it myself just out of curiosity, but I'm lacking the flow meter at the moment.
  12. nsamouroux

    Closed Loop

    Well, I could have just explained it to any normal / rational person by saying "yep. Pumps can suck water, not just push it" like Golf Nut did a few posts ago, but Salty needs the entire process laid out for him so he can analyze it from an engineering standpoint :badgrin:. Based on what I...
  13. nsamouroux

    Closed Loop

    Well, I'll try to put it into basic terminology since you're only an engineer and all (the first step in recovery is admitting that you're an engineer! :lol:), the centrifugal force (IE spinning) of the pump impeller temporarily suspends gravity in an area directly porportionate to the size /...
  14. nsamouroux

    360 gallon logistical nightmare and no spare time!

    Just in case someone else can benefit from what I've learned.... After seeing the troubles Saltyfish went through on his 300g peninsula style tank and a couple of Koralia Magnum 7 pumps blowing around his sugar grain / oolite sand, and some other information brought out regarding prop-based...
  15. nsamouroux

    360 gallon logistical nightmare and no spare time!

    Very true! The pics look a lot more cloudy than it actually is, I can see the overflow on the back wall and all of the powerheads from where I'm sitting across the room, so it's not too bad right now. I'm sure it'll be totally clear in another day or two if I leave the pumps off. I really like...
  16. nsamouroux

    360 gallon logistical nightmare and no spare time!

    Actually, the token rinsing was exactly what I wanted to do since I only wanted to get the potential "garbage" out of the sand. Based on some research and threads over at Reef Central discussing sand beds I wanted to leave the majority of the silt to get the benefit from it, but I turned all the...
  17. nsamouroux

    360 gallon logistical nightmare and no spare time!

    Oh? Oh! What's this that greets me when I get home? An almost clear tank! Rocks I put in to seed the sand bed with "reef stuff" left side viewing panel, and the far left Koralia Magnum 8. It'll be moved down quite a bit and remain pointed upwards based on some ideas I pilfered from...
  18. nsamouroux

    Closed Loop

    Since Youtube has apparently kicked the bucket for the time being: Yes, pumps certainly DO suck water. How else could you take a Magnum 350 canister filter (a basic impeller-based pump design) and set it on top of the tank and still get water flow through it? It's certainly not gravity feeding...
  19. nsamouroux

    Closed Loop

    Now don't go bringing that logic stuff in here... We were having fun! :) I know for a certainty that my return pump rated for 5500gph at 5' head can just about rip my flesh off if I block the intake!
  20. nsamouroux

    Closed Loop

    On the other side of things though Saltyfish, different manufacturers use different terms in their ratings. One powerhead maker might use the term "flow" and mean something completely different from another brand / maker using the same descriptor. Also, there's translation issues to take into...
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