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Poll: Poll: Flow turnover rate

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Thread: Poll: Flow turnover rate

  1. #16
    Amphipod

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    Quote Originally Posted by krish View Post
    You are my hero!!! . Could you list your specs for us!! I'd love to know what you are running in what sized tank!!! That's insane in a cool way!!


    LOL, Just checked my math, it sucks I put in 30,000 instead of 3000 x by a tank volume of about 250 gal. The tank is 60x27x 40 deep. going to be running a Barracuda gold with a 10 foot head, with 2 Vortech mp 60's. (Not sure wether to use MP 40's or 60's. ) Would like the 60's but cost may be a factor. If you add the 60's in it would give me about 72x . Still sounds a little high to me, lol

  2. #17
    Mr. Reckless
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    I am running 2 MP40W ES, 2 MP10W ES, and a Reeflo Dart with 2 exits... so in the 200 cube I am running about a 81x turnover but am using the Gyre effect to increase the effectiveness based on my atoll rockwork.


    In my 75 gal tank I had almost 166x turnover at one point just prior to upgrading.

  3. #18
    Amphipod

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    Quote Originally Posted by akunochi View Post
    I am running 2 MP40W ES, 2 MP10W ES, and a Reeflo Dart with 2 exits... so in the 200 cube I am running about a 81x turnover but am using the Gyre effect to increase the effectiveness based on my atoll rockwork.


    In my 75 gal tank I had almost 166x turnover at one point just prior to upgrading.
    wow, thats a lot, May be i will be ok with what i have, Will find out when it's up and running. Going to be a few months yet

  4. #19
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    I voted 50x mostly because I keep SPS as a majority.
    I used to run over 20,000 GPH in my 210 at a 95x turnover rate and felt that it wasnt enough flow for the amount of corals I had in the tank. After some thinning and reaquascaping I backed my flow down to a 9000GPH at 42X and it was finefor the way the tank was set up.

    In my current 29G I started with only 700GPH at a 24X turnover but only planned to keep LPS and softies. A friend asked me to babysit a bunch of SPS so I increased the flow to 1900GPH at a 65x turnover and for the last six months corals are growing fine. But due to coral growth Im finding it isnt enough and there are more and more dead spots so plan to increase the flow up to 2500GPH at 82 turnover in the next few months.
    Last edited by trido; 10-28-2011 at 11:06 AM.

  5. #20
    I Love Big Torts!
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    IMPORTANTLY, not to forget to allow for "head rise reduction and portal division too! Most pumps claim their gph output at zero head rise, so there is a head loss calculation to allow for. R-I-G-H-T?

    Reeflow Gold Superdart 4300gph + two Korallia 4's 1200gph each - headloss and elbow restrictions and exits = 6117gph - 300gal processing Totals = +20x turn over rate
    But, it's how you apply it that keeps the detrius from collecting, try elevating the reef on stilts while using moderate fluctuating flow (wavemaker pulse timers). I haven't had to rake the bottom for months!

    Quote Originally Posted by krish View Post
    Just to toss this out there for those un-sure how to calculate your turnover rate, you will add up the flow all of your pumps put out and divide it by your tank's total volume so say for instance my old 38 gal I had 2 closed loop pumps putting out 1506 gph each and a sump return putting out 950 gph so that would be 1506 + 1506 + 950 / 38gal = 104.2x turnover rate.
    Last edited by Aquanaut; 10-28-2011 at 12:51 PM. Reason: update
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  6. #21
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    HERE IS A GREAT HEAD LOSS CALCULATOR AND EASY TO USE:

    http://www.reefcentral.com/calc/hlc2.php
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  7. #22
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    2x 3200 GPH power heads (6400GPH)
    1x 3600 GPH closed loop
    1x 1500 GPH return pump
    11500 GPH total 125 gallon tank BUT running at about 100 Gallons with the one inch of tank above the water and the rock SOOOOO

    I'm rocking about 110+ times an hour!!!
    !!!!STOP LAUGHING AT ME MIKE!!!!

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  8. #23
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    TW my pump (CL) is rated 3600 at 4 feet of head and I have about exactly that with 32" head (up) and the pluming and bulkhead loss.
    !!!!STOP LAUGHING AT ME MIKE!!!!

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  9. #24
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    Quote Originally Posted by Aquanaut View Post
    HERE IS A GREAT HEAD LOSS CALCULATOR AND EASY TO USE:

    http://www.reefcentral.com/calc/hlc2.php
    I would use that calculator with a bit of caution. In the past, I used a mj1200 with 3/4 pipe at 4' of head. The calculator claims that even at 3' the MJ wont work and will only give 52GPH at 2' of head pressure. Somehow, my mj1200 defied physics and worked as a return pump at 4' of head pressure.

    Currently, I use a Gen X PCX-55 pressure rated pump rated for 1180GPH at 26ft of head. With 6' of head 20 feet of vertical, one inch pipe, a couple elbows, a couple valves, etc. The head loss calculator claims this pump will only push 893GPH for my application, yet if I run this pump wide open my two 600GPH (1200GPH) overflows will be maxed out.

    I quit worrying about head pressure and I definately quit using this head loss calculator years ago.

  10. #25
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    In my opinion numbers are just numbers sometimes. u can have as much gph as you want and it still has to be used wisely. blasting flow into objects or against the glass wont give u much true flow in the tank. whereas flow into open current with lots of room to travel will give u even more flow than the pump is listed at for the most part. so turnover doesn't exactly equal flow in my opinion but it definitely helps u in deciding what pumps to use/purchase.
    Last edited by Darthv247; 10-29-2011 at 07:22 AM.
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  11. #26
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    Quote Originally Posted by Darthv247 View Post
    In my opinion numbers are just numbers sometimes. u can have as much gph as you want and it still has to be used wisely. blasting flow into objects or against the glass wont give u much true flow in the tank. whereas flow into open current with lots of room to travel will give u even more flow than the pump is listed at for the most part. so turnover doesn't exactly equal flow in my opinion but it definitely helps u in deciding what pumps to use/purchase.
    I agree that placement of the pump and direction of flow is very important. You can have lower turnover with the flow positioned just right to keep the water moving and work better than having twice the turnover and wrong positioning.

  12. #27
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    Quote Originally Posted by IPisces View Post
    I agree that placement of the pump and direction of flow is very important. You can have lower turnover with the flow positioned just right to keep the water moving and work better than having twice the turnover and wrong positioning.
    Definately! Some people just like to have something as a starting point to work with instead of walking in completely blind. Just like the 1-2lb per gal "rule" people follow when buying rock for their tank. 10lbs of one rock could be more beneficial than 30lbs of another, but you have to admit, 100+ x turnover rate in a little 38 gal, you can't help but to cover the whole tank and avoid deadspots especially with 9 nozzles that can all be adjusted independantly
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  13. #28
    Mr. Reckless
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    That is another topic to get into though. I am able to get away with a much lower turnover in the cube vs my old peninsula because I am able to create a Gyre effect via Vortech programming. The concept of using the fluid dynamics in the tank to increase the overall force of water movement can become a complicated topic especially since it is going to be unique to everyone's individual tank.

    For instance. I use my MP 40's on the back wall with the MP10 at the front panels all pointing to create a counter clockwise gyre. The outlets from the Dart go into the atoll and cut across each other in a X pattern to create turbulence within the rock work. This allows me to use less Powerheads while maintaining a very strong flow and no dead spots.

  14. #29
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    I'm a big Tunze fan but really dying to try some vortechs. It will all depend on what the next tank is.
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