Conversion of a tank

Discussion in 'Beginner Discussions' started by crash_override, 25 Sep 2016.

  1. crash_override

    crash_override

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    Hi guys,

    I have seen a lot of guys convert a freshwater tank to a marine tank so im here for some advice...
    I currently have a freshwater tank with some discus in there however they are now old and grey and I can see the inevitable on its way :(

    I want to convert this tank to a saltwater tank.
    The tank is 245 liter full, but once you add substrate and live rock im guessin a water volume of around 200L.
    I have a fluval 406 which runs at 1450L/h and plan on getting a HOB protein skimmer.
    I will change the media in the canister filter to new out of the box media and also add about 15kg of live rock and a good substrate (im thinking carib sea seafloor special grade or red sea live sand.

    I have a Zetlight ZT6600 that will be powering the setup.

    Do you think that this will work?

    Any pointers in the correct direction?
     
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  3. aapstert180

    aapstert180

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    Hi and welcome. What is the tank dimensions? Glass thicknesses? Why not add a sump? Will give larger water volume and increase stability in tank.
     
  4. OP
    crash_override

    crash_override

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    Hey bud,,
    Tank is 120cm long
    50cm high
    45cm wide.
    Glass thickness is 6 or 8mm.. cant remember now. Think it is 6mm.

    Considering it but space is a constraint and i also dont want to drill my tank... i really dont wanna drill my tank.. probably will put a hang on back overflow and a vertical style sump later on.
     
  5. aapstert180

    aapstert180

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    You will need to put in braces too, not sure if 6mm glass will do the trick. Hang on overflow takes alot of space.its better to drill, i have an overflow box built on side of tank with 2 overflow pipes. Rather safe than sorry
     
  6. OP
    crash_override

    crash_override

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    it has braces. i already took the hood off and put some glass panes on as well as the zetlight.
     
  7. aapstert180

    aapstert180

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    Good luck, keep us postes on the progress, and remember the pics!!
     
  8. 459b

    459b Moderator

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    It may be best to drill it. Id also do it before any livestock goes in. Its much easier to make changes now than once tank has cycled.
     
  9. TaahirS

    TaahirS MASA Contributor

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    My 90 long 50 high tank has 10mm glass.

    I put the dimentions of your tank into the safety calculator, it says that your tank has a safety factor of 1.7.

    The recommended safety factor is 3.8. It says that you should have at minimum 9mm glass with a double base.

    Not sure how accurate that is, but just putting it out there.

    I would also agree with the above and say you should drill your tank and get a sump. My old tank didn't have a sump and it was very cluttered and harder to work in. I'm not regretting getting a sump for my new build.


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  10. SAReefer

    SAReefer

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    Drilling is your best option, and not too difficult... check out Bulk Reef Supplies video on 52 weeks of reefing. Not sure which episode but it's up front and shows how to do it.

    The sump will not only add volume, but also allow to add other filtration. Canister filters are not great for Reef systems. Also, I think the skimmer should be hidden away, not only is it more effective but also you and guests don't have to see the green stinking slime that builds up everyday.

    Sump is the way to go when converting.


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  11. DarkSurferZA

    DarkSurferZA

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    Let me join the band wagon on the sump train, but a sump-less system can be done with lots of success and drilling is not the only option for a sump.

    Your glass is quite thin, and I would personally not drill it without first understanding the impact to structural integrity and how you are going to re-enforce the tank.

    If you aquarium ran with fresh water without falling apart at the joints, it should run with salt water as well. Salt water is a bit heavier, and has much higher flow rates (more vibration more equipment etc etc) which equals more stress, so just factor that in a bit. That being said, be very careful with the live rock. make sure you epoxy and secure it with rods before hand, and maybe do a bit of putty between the rock and the glass. then add sand after. Marine critters tend to move stuff around alot more than the fresh water variety.

    Happy reefing, and good luck on the journey bud
     
  12. Nico123

    Nico123

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    +1 on the sump.
     
  13. Wizard$

    Wizard$

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    Hi
    This may sound harsh, but unless you have to have that tank, you would be better off selling that freshwater system with everything except the light, and looking for a 2nd hand similar size "reef ready" tank. Apart form all the other limitations, the 45 cm wide is going to frustrate you in the long term.
    If this is not an option, a sump setup is , while not required, is highly recommended, and for a sump setup, drilling is highly recommended. I recently drilled my Red Sea 130, and was surprised at how easy it was - lots of advise and DIY's on reefing forums and youtube - some of my favourites are fishofhex, BRStv, madhatters reef, CJ, etc.

    Goodluck, and take your time.
     
  14. SantaMonica

    SantaMonica

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    Don't want the canister... it removes to many food particles. But sumpless is fine, and simple, like a pond with glass walls.
     
  15. EFJ

    EFJ MASA Contributor

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  16. OP
    crash_override

    crash_override

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    Hi guys!
    Sorry for almost abandoning this thread!

    So I figured out that my glass is tempered so I cannot drill it as all will shatter.. so I got myself an overflow box and have been running it in since December.
    I had a sump made for me which has a overflow into a skimmer which flows into a fuge and then into a bio media section before the return section.
    So the tank is cycled and I have some nice corals in there already. I'm currently busy to set up a QT tank for fish so that I can medicate and ensure disease free before adding to display tank. (Lost a first batch of fish to white spot :( )

    so the current inhabitants are:

    Inverts:
    4 hermit crabs
    2 cleaner shrimps
    1 peppermint shrimp
    3 trocus snails

    Coral:
    1 elegance coral
    3 frogspawn coral
    2 torch coral
    some zoas
    couple of brains and acans
    2 bubble coral
    3 small sps
    2 trumpet corals
    1 ricordia

    I have about 20kg of rock in the display and about 2kg of live rock in the fuge to help hold down the chaeto.

    So far things are going well apart from the white spot issue :(
     
  17. EFJ

    EFJ MASA Contributor

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    Great to hear you are up and running. Sorry about the white spot always a bugger. Maybe a pic or two if you can. Also just a side note I will keep an eye on the elegance as they dont do too well in a newish system. Preferably a system that has been running for at least a year.
     
  18. OP
    crash_override

    crash_override

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    Hey man, thanks for the advice! will be sure to look out for it. So far its expanding nice and things so fingers crossed.
    I don't have any recent pics with the corals in but will take one when the lights are on and then post it.
    From a stock count perspective, any advice on max number of fish in a 250L tank? (Water volume less due to substrate and rockwork)
     
  19. EFJ

    EFJ MASA Contributor

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    It all depends on what you use for filtration and even what type of fish you are planning on putting in. So it can vary. Maybe post a list of what you are planning to put in then we can give you better advice that way.
     
  20. OP
    crash_override

    crash_override

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    ok.
    I have a curve 5 skimmer, rated for 500L
    I have 3L of marine pure bio media and a refugium section in my sump.

    Im not so sure yet.. what would be nice fish to keep?
     
  21. EFJ

    EFJ MASA Contributor

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    Filtration seems fine. Smaller fish types will do well in a 250l tank. I would look at wrasses and gobies to start off with. Clown fish are always a winner.
     
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