Jump to content

Can I use water from my arowana tank to start marine tank?


Patrick
 Share

Recommended Posts

  • SRC Member

Hi, I am converting my arowana tank to marine. Instead of cycling water from scratch, I am thinking of using water from my arowana tank to start a marine tank i.e. change 30% of water and put marine salt and let it run for a few days. I intend to keep marine fishes only. Will the existing bacteria in the cannister filter die due to high salinity? Is it a good idea? All advice are welcome. Thanks!

Link to comment
Share on other sites

  • SRC Member
Not only bacteria in your canister as consideration. Your arowana water source from where? Tap water? You will contribute phosphate and silicate when converting to marine tank. i don't think it is a good start. it is different world.

Thanks for your advice bro Mike :) Looks like I have to clean up the tank and cannister thoroughly ya...

Link to comment
Share on other sites

  • SRC Member

Then Arowana poop a lot=nitrates and phosphates.So i suggest you use DI water.And restart since the bacteria will suffer salinity shock.

girlone.png
Link to comment
Share on other sites

  • SRC Member

No, please do not use the water from your FW tank. I suggest that you restart the tank from scratch. What is the size of your tank? Thickness of the glass? Do note that FW tanks are not recommended for marine use because the thickness of the glass is thinner. This will depend on the size of your tank.

Also, it is not true that you cannot start a marine tank using tap water. Just that tap water contains phosphates and nitrates which will lead to algae blooms and not so good in the long run.

Sometimes the good guys gotta do bad things to make the bad guys pay. - Harvey Specter

Link to comment
Share on other sites

  • SRC Member

one question: how come marine tank requires thicker glass compare to FW tankl?

No, please do not use the water from your FW tank. I suggest that you restart the tank from scratch. What is the size of your tank? Thickness of the glass? Do note that FW tanks are not recommended for marine use because the thickness of the glass is thinner. This will depend on the size of your tank.

Also, it is not true that you cannot start a marine tank using tap water. Just that tap water contains phosphates and nitrates which will lead to algae blooms and not so good in the long run.

Link to comment
Share on other sites

  • SRC Member
one question: how come marine tank requires thicker glass compare to FW tankl?

Reason is bcos marine uses salt water(Specific Gravity=1.025) and it is denser than fresh water(SG=1).

So for the same volume, the contents is much heavier.

Link to comment
Share on other sites

  • SRC Member

He is right. Marine tanks have more specific gravity than FW tanks.

Just imagine a layman comparison,

Example:

3ft 100G FW tank

Total weight of water = 300L = 300kg

3ft 100G Marine tank

Total weight of water = 300L = 300kg

Salt required = 20kg

Live Rocks = 50kg

Total weight (content) of FW tank = 300kg

Total weight (content) of Marine tank = 470kg

That is why you need a thicker glass tank for marine setups. The bigger the tank, the thicker the glass.

Patrick, your tank how many ft?

How many mm is your glass thickness?

Sometimes the good guys gotta do bad things to make the bad guys pay. - Harvey Specter

Link to comment
Share on other sites

  • SRC Member
He is right. Marine tanks have more specific gravity than FW tanks.

Just imagine a layman comparison,

Example:

3ft 100G FW tank

Total weight of water = 300L = 300kg

3ft 100G Marine tank

Total weight of water = 300L = 300kg

Salt required = 20kg

Live Rocks = 50kg

Total weight (content) of FW tank = 300kg

Total weight (content) of Marine tank = 470kg

That is why you need a thicker glass tank for marine setups. The bigger the tank, the thicker the glass.

Patrick, your tank how many ft?

How many mm is your glass thickness?

:)- I didnt ask the LFS shop thickness because at that time I just wanted a tank for FW. Bought a half round 2.5ft tank. Will drop by the shop and ask them later. Thanks bros you all are very and very helpful.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share



×
×
  • Create New...