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Results 1 to 10 of 25
  1. Post Turning off the filter at night and its consequences


    0 Not allowed!
    Hello everyone.

    I am a biologist and decided to run a FOWLER. (I had FW before).
    I love my absolute silence when I sleep and I think I might turn off the Ehiem canister filter at night.

    I am sure it is not the optimal condition but lets talk about it.

    Most nitrification organism (bacteria and archaea, Nitrosomonas, Nitrobacter) are aerobic, However we still have anammox (anaerobic oxidation of ammonia by ie Planctomycetes).

    I am sure not all of the microbial community will die during 9 hour of lack of circulation in the filter(think how hard it was to get ride of all those algae or cyanobacteria). Yes, it will reduce the viable and active cells but I won't say they "all will die". Moreover this will provide opportunity for Anaerobic anammox to get active.

    When no input of resources (in our case tank water) is added to our "reactor"(filter) cells first go into dormant phase, then spore and then die. Others might get the opportunity to get active(as I said about anammox).
    So I hypothesis that turning off the filter at night should act as a little time freeze on microbial community of our filter?
    I try to search some peer review articles about this. But I would like that you guys share your experiences and your thought

    1-what do you think?

    -------------------------------------------------------------
    Now Please comment about technical aspect of this scenario:
    I have 60 gallon tank with lots of live rock and few fishes.
    I set a timer to turn off the Ehiem Canister classic off by 11pm and turn it on by 7am. Does it start to filter again automatically. I never used canister so I don't know about priming.

    2-Now please comment about technical aspect of automatic turning off/on
    Last edited by seavashr; 06-21-2011 at 05:30 PM. Reason: I am not sure if I post this in proper topic!

  2. #2

    Default


    0 Not allowed!
    Well in the case of SW most of your BB is in the rock's nooks and crannys in which case you just need to keep the water in your tank circulating. You'd be absolutely fine turning the filter off at night, so long as you have power heads circulating the water in your tank when the filter is off
    55g Long --> After 18mo of doing well the tank crashed during moving. Most likely cause: Flatworm Die-off... won't start another until after moving... Likely not until late 2013

    20g Long --> currently concoting a build plan

    Check out the journal to follow my 20g SW tank

    "Take a chance, because you never know how perfect some things can turn out" -- unknown

  3. #3

    Join Date
    Feb 2010
    Location
    Ypsilanti, Michigan
    Posts
    5,750

    Awards Showcase

    A lovely red rose for you to enjoy ... - mermaidwannabe for the help - smaug Happy Father's Day! - Aminax awesome tank in TOTM - Lady Hobbs Good guess! - Lab_Rat 
    To match your Super speed LOL - 850R Cool contest! - Wild Turkey Great shrimp advice - Wild Turkey You have the patience of a rock - Aeonflame Happy 5th Anniversary - Aminax 
    Thanks! - Scrup hmm i dont this its the right species... but merry xmas XD - genocidex Merry Christmas! I blub you! - Aminax I love following your informative and well designed threads. I hope these loaches get huge for you! - Sandz Happy 30th birthday! - Aminax 
    Merry Christmas - Cliff Thanks for you help! Cheers! - koaladarshana Happy Birthday Bud. Cheers! - Strider199 Merry Xmas! Ill drink to that! - Sandz Happy New Year! - jeffs99dime 
    Cancer - Epilepsy - Foster Care - Gynecological Cancer - Rett Syndrome - Brhino 

    Default


    0 Not allowed!
    I don't know anything about saltwater filtration, but I do have a canister filter. It won't have any problems coming back on after a period of being turned off. It won't need priming or anything so long as you didn't drain it or allow air to enter it somehow.
    300 gallon mega tank: build in progress
    75 gallon community tank: tetras, danios, corys, platies, otos, pearl gouramis, bristlenose pleco, assassin snails, red cherry shrimp, bamboo shrimp
    70 gallon growout tank: clown loaches, sailfin pleco
    60 gallon goldfish tank: fancy goldfish
    29 gallon frog tank: 1 bullfrog
    10 gallon and 5.5 gallon betta tanks: 1 male betta each, sometimes snails

  4. #4

    Default


    0 Not allowed!
    I agree with Hockeyhead

    With enough good quality live rock, you won't need the cannister for biological filteration. Were you also planning to run carbon or phosphate remover in the cannister ?
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]

  5. Default


    0 Not allowed!
    I've never heard of anammox occurring in our aquaria, most likely because its growth rate is so slow which is also what's limiting its use in wastewater treatment. In our aquaria, it's outcompeted by faster growing bacteria and rendered useless.

  6. Default


    0 Not allowed!
    Thanks everyone


    Quote Originally Posted by hockeyhead019
    You'd be absolutely fine turning the filter off at night, so long as you have power heads circulating the water in your tank when the filter is off
    I actually plan to turn off the powerheads too! But again I will keep low number of species to water volume. Do you think the follow of water is that important?


    Quote Originally Posted by Cliff
    With enough good quality live rock, you won't need the canister for biological filtration.Were you also planning to run carbon or phosphate remover in the canister ?
    Well, If you think adding carbon and phosphate remover helps; sure I will do.

    I want to have canister filter to keep my aquarium cleaner(physical removal) and help remove chemical as well. And some biological will be bonus.
    and yes I want to have lots of rocks

    Quote Originally Posted by Brhino
    I do have a canister filter. It won't have any problems coming back on after a period of being turned off. It won't need priming or anything so long as you didn't drain it or allow air to enter it somehow.
    So you Let say I use one input and output tube into the tank. The timer can turn it off and on and it starts to work as nothing happened?

    Quote Originally Posted by funkman262
    I've never heard of anammox occurring in our aquaria, most likely because its growth rate is so slow
    You are absolutely correct, because it won't be able to compete with more energetically favored oxidation. But my main idea was to discuss that I don't think if filter goes off,(which basically means you have the same media in filter) over the night "it's bacteria will die" as some believe. I think this reduce the efficiency and capability of the biological filtration of canister. However as it starts next day it will be able to catch up biological degradation of ammonia. What do you think?

  7. Default


    0 Not allowed!
    I really don't know how long these bacteria can survive without oxygen. If ammonia were the limiting factor here then they would simply be able to consume degrading cells for nutrients until the flow starts back up and brings nutrients into the canister again. It's different with oxygen though. If anything, there might be facultative anaerobes that would simply use the most energetically available ions available to them, which in this case would be nitrate.

    But as others have said, I don't think leaving the canister off at night would be an issue anyway as long as you have enough live rock for aerobic bacteria to colonize.

  8. #8

    Join Date
    Feb 2010
    Location
    Ypsilanti, Michigan
    Posts
    5,750

    Awards Showcase

    A lovely red rose for you to enjoy ... - mermaidwannabe for the help - smaug Happy Father's Day! - Aminax awesome tank in TOTM - Lady Hobbs Good guess! - Lab_Rat 
    To match your Super speed LOL - 850R Cool contest! - Wild Turkey Great shrimp advice - Wild Turkey You have the patience of a rock - Aeonflame Happy 5th Anniversary - Aminax 
    Thanks! - Scrup hmm i dont this its the right species... but merry xmas XD - genocidex Merry Christmas! I blub you! - Aminax I love following your informative and well designed threads. I hope these loaches get huge for you! - Sandz Happy 30th birthday! - Aminax 
    Merry Christmas - Cliff Thanks for you help! Cheers! - koaladarshana Happy Birthday Bud. Cheers! - Strider199 Merry Xmas! Ill drink to that! - Sandz Happy New Year! - jeffs99dime 
    Cancer - Epilepsy - Foster Care - Gynecological Cancer - Rett Syndrome - Brhino 

    Default


    0 Not allowed!
    Note that, as per OP's other thread, he would also like to shut off his powerhead at night.
    300 gallon mega tank: build in progress
    75 gallon community tank: tetras, danios, corys, platies, otos, pearl gouramis, bristlenose pleco, assassin snails, red cherry shrimp, bamboo shrimp
    70 gallon growout tank: clown loaches, sailfin pleco
    60 gallon goldfish tank: fancy goldfish
    29 gallon frog tank: 1 bullfrog
    10 gallon and 5.5 gallon betta tanks: 1 male betta each, sometimes snails

  9. Default


    0 Not allowed!
    Get a rena xp.I have 3 of them running and cant even tell.

  10. #10

    Default


    0 Not allowed!
    Quote Originally Posted by seavashr
    Hello everyone.

    1-what do you think?

    -------------------------------------------------------------
    Now Please comment about technical aspect of this scenario:
    I have 60 gallon tank with lots of live rock and few fishes.
    I set a timer to turn off the Ehiem Canister classic off by 11pm and turn it on by 7am. Does it start to filter again automatically. I never used canister so I don't know about priming.
    Just a quick thought occurs to me.

    If you have never used a canister filter, You may be very surprised at the noise you [don't] hear.
    Gas mileage isn't everything OIIIIIIIO
    Lack of planning on your part does not constitute an emergency on my part.
    Why pretend there are no stupid questions? Actually, There are many stupid questions: "Should I drink this bleach?" Is just one example.
    Having said that, Just because it's a stupid question doesn't mean that it shouldn't be asked. It's better to know.

    A warm beer is better than a cold beer. Because nothing is better than a cold beer, and a warm beer is better than nothing.

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