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Old 05-20-2014, 08:10 PM   #1
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How hard would it be to turn a freshwater tank, to a saltwater tank?

Only out of curiosity. Not sure if I will do it.
Im only looking for fish only, not coral.

My freshwater tank specs are:

- 47cm square cube tank. 103 Litres / 27 Gallons Cube tank.
- Rimless 6mm glass, clear silicone.
- Aquaclear 70 hang on back filter (custom media), 1135 L per hour/300 U.S. gal per hour.
- Custom Filter Media of: Marine Pure Spheres, Seachem Matrix, Eheim Substrat pro, Aquaclear Biomax, Aquaclear Sponge, Polyfiber.
- Eheim Jager 150 Watt heater.
- Eheim 100 air pump.
- Beamswork 300 super slim LED light. 6500K. Moonlight/Daylight option.

So with this equipment, what would I need to change, to start a saltwater tank?
Also, do I have to buy saltwater every week for water change?

Thanks.
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Old 05-20-2014, 09:21 PM   #2
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With that equipment you would really just need to get some aragonite substrate, live or dry rock, bucket of salt mix, and a refractometer.
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Old 05-20-2014, 09:39 PM   #3
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Thank you for the reply.

Is that all I need? So just change substrate to aragonite, add dry rock as tank decorations, buy some salt mix (how does that work?) And buy a refractometer (what exactly is this?)

A local fish store said aquaclear hob filters wont work at all with saltwater. Is that true? He said canister might work.

How does water change work? Do I need to buy water?

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Old 05-20-2014, 09:48 PM   #4
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Quote:
Originally Posted by sealife View Post
Thank you for the reply.

Is that all I need? So just change substrate to aragonite, add dry rock as tank decorations, buy some salt mix (how does that work?) And buy a refractometer (what exactly is this?)

A local fish store said aquaclear hob filters wont work at all with saltwater. Is that true? He said canister might work.

How does water change work? Do I need to buy water?

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Sorry, I forgot to mention an RO/DI unit as well. You mix the salt with RO/DI water to make your own salt water. The refractometer measures salt levels. Also, yes an aquclear filter will work perfectly fine. The fish guy was just trying to get you to buy more equipment.
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Old 05-20-2014, 09:50 PM   #5
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Ok thank you for your help. An ro/di unit is a bit much for me at the moment. The rest of the stuff was ok though.

Ill keep it in mind. Saltwater fish are just amazing and colourfull

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Old 05-20-2014, 09:53 PM   #6
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hehe yeah, I still don't have an RO/DI system myself and my tank has been running for over a year. I would recommend against trying it unless you're blessed with impeccable water quality like I am. Algae blooms usually result from most tap water use.
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Old 05-20-2014, 09:55 PM   #7
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Also to add to what mebbid said you can only have about 4-5 small fish in that size tank. Nothing big like tangs, angels, rabbit fish, triggers, etc. small fish like clowns, gobies, blennies, dotty backs, basslets would work though
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Old 05-20-2014, 10:03 PM   #8
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I will most likely need ro/di unit. (Whats it do exactly)
So what fish would suit my tank, if I was to slightly understock tank. Maybe have 3 or 4 fish?

Thanks again guys

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Old 05-24-2014, 01:52 AM   #9
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You can also use distilled water
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Old 05-24-2014, 03:19 AM   #10
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I just added a salt water aquarium to the house after years of fresh water and the one thing I didn't see mentioned here is a test kit. (Nitrate,ph,etc.)Very helpful in my experience although I think most local pet stores will test your water for free if you want to make the drive. Also buying water is about 12-15$ for 5 gallons in my area, I would look on craigslist to see if anyone's selling a good ro/di unit for a reasonable price. Good luck! It's been fun to make the switch


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