Cooling tanks down

Discussion in 'Hardware & DIY' started by skinz180189, 3 Jul 2009.

  1. skinz180189

    skinz180189 Member

    Messages:
    325
    Location:
    Selby, N.Yorks
    After my heater worry, it turns out my room/house is just very warm (all heating off etc, 24C at 6AM downstairs, tank is upstairs). This is making it hard to keep tank temps below 28C. I've currently got the heater unplugged, leave the 55cm x 10cm feeding hatch open, and my light is only 15W, yet temps rarely dip below 28C, even on a cooler summer day.

    Has anybody else experienced this issue and solved it cheaply and easily?
     
  2. samc

    samc Member

    Messages:
    1,381
    you can buy chillers which are very expensive or the cheaper alternative it a fan which you can buy for a few quid but i belive they are a little noisey and you loose a bit of water
     
  3. skinz180189

    skinz180189 Member

    Messages:
    325
    Location:
    Selby, N.Yorks
    On the fan side, was just wondering whether I could wire in some PC cooling fans to the hood somehow.
     
  4. gixer

    gixer Member

    Messages:
    69
    Location:
    Athens, Greece

    That's exactly what i have done.

    As Sam says you do loose a fair bit of water, i'm losing around 6L a week in my 120L tank.
    But even in the height of summer here i rarely see anything over 28c water temp wise.


    You can buy controllers that turn the fans on/off at preset temps.
    Eliwell do some good ones that many guys use over here, i have been unable to find any on-line though and the store that sells them is in the port town of Athens so tends to be slightly busy in summer, so there's no way i'm driving over there.


    What i've done is just buy a 12v transformer and plug it into a timer, depending on the ambient temps i'll have the fans on longer or shorter.

    Only pic i have is this old one
    19062008241.jpg

    I've since added another fan and angled the fans to blow in the direction of the open vent t'other side.


    It works THAT well you'll need to refit your heater.


    If your interested in seeing more let me know and i'll snap some more pics in the morrow.


    Cheers
    Mark
     
  5. skinz180189

    skinz180189 Member

    Messages:
    325
    Location:
    Selby, N.Yorks
    Mark, some more pics of that would be great thanks.
     
  6. james3200

    james3200 Member

    Messages:
    296
    Location:
    CROYDON
    A quick & easy solution on smaller tanks that I have used is to freeze 2lt or larger bottles of water, put it in the tank and it can help a fair amount.
     
  7. skinz180189

    skinz180189 Member

    Messages:
    325
    Location:
    Selby, N.Yorks
    Ah, might try that on hotter days.
     
  8. GreenNeedle

    GreenNeedle Member

    Messages:
    2,706
    Location:
    Lincoln UK
    I see Mark has a Fluval hood (or similar) This is what I did with the same type of hood when I used to have it:
    fanfilters.jpg
    hoodholes.jpg
    fansinside.jpg
    fanshood.jpg
    complete.jpg

    Then when I replaced it with a DIY hood I transferred the fans onto it:
    mysight.jpg

    I have fans on my luminaire now that keep the LEDs cool but as it is open top the water doesn't seem to have the problem with the heat being retained.
    compboardfitted.jpg

    On a side note for Mark. The hood you have there (if the same as mine) is one that uses underpowered magnetic ballasts. You may have upgraded but if you still have the ballast (I am guessing it is a Duo Deep 1200) it will probably be a 2 x 30W ballast which was running 2 x 36W tubes. If so you previously had 60W not 72W :lol:

    Mine was a 2 x 15W running 2 x 18W (2 x 20W originally) tubes.

    AC
     
  9. LondonDragon

    LondonDragon Administrator Staff Member

    Messages:
    10,298
    Location:
    London
    I use one of these in my 60cm tank:

    http://cgi.ebay.co.uk/Twin-Cooling-Fan- ... 1|294%3A50

    Keep the temp at 22ºC today which us great for the Crystal Red Shrimp, last summer the tank went to 32ºC and wiped the CRS from my tank, this time around I was prepared, when temps reached 33C on Thursday the temp in the tank was at 25ºC.

    For the price they cost and the amount of money I have invested in shrimp they are the best bargain ever!!!

    They do bigger sizes too: http://cgi.ebay.co.uk/JEBO-Aquarium-Fou ... 1|294%3A50
     
  10. skinz180189

    skinz180189 Member

    Messages:
    325
    Location:
    Selby, N.Yorks
    They would be perfect but I'm not sure how I could attach that to mine, what with the hood being in the way.
     
  11. skinz180189

    skinz180189 Member

    Messages:
    325
    Location:
    Selby, N.Yorks
  12. gixer

    gixer Member

    Messages:
    69
    Location:
    Athens, Greece
    Ok snapped some pics.

    Went up to 5 fans now, that way i don't have to spin em so fast so they're quieter.
    They're just standard PC fans, so cost only a few quid each.


    IMG_1382.jpg


    Angled em so they're blowing out throw t'other side.
    Tried various brackets and clamps, but most the metal ones i made were to heavy.

    In the end tie wraps work great and i can remove em after summer in a couple of mins.

    IMG_1383.jpg


    I just used a variable voltage transformer, that way i can adjust the speed.

    IMG_1393.jpg

    As you can see i just have plugged into a timer.
    If i leave the fans running constantly then i loose far too much water.

    By far the best solution is to use a controller like the eliwell 915c, if i could find somewhere to order one on-line i'd buy 1 today.
    As because it only powers the fan when it's needed it'd reduce evaporation to a minimum.

    But the timer does the job.

    All in all the whole lot came in under 20 quid.




    SuperColey1,

    Nope mines not a Fluval it's a cheap as chips supermarket special :lol:
    I replaced the stock lights with a Hagen Glo 2 x 39w T5 ballast.

    Worst thing i've done :(
    Because i'm not injecting CO2 algae is now a constant companion :(


    Cheers
    Mark
     

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