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Old 04-28-2014, 08:41 AM   #1
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Please identify

I bought a new tank second hand and came with a glass thing that looks similar to a thermometer (but its not) and i have no idea what it is and i was wondering if anyone else has come across it

Thanks



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Old 04-28-2014, 09:07 AM   #2
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It's a device used to measure salinity. Pretty old... Not many people use that anymore. Notice it says "Sp. Gr".
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Old 04-28-2014, 11:06 AM   #3
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This is a salinity meter (densimeter). You put it in salted water, and it will give you instantly the salinity. This is old device usually used to mesure SG when brewing beer/wine.

You can get this for 15$, but it's not the most accurate...


Also, you can get this for 60$, but it's really accurate.
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Old 04-28-2014, 11:07 AM   #4
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What kind of aquarium are you building ?

Saltwater or freshwater ?
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Old 04-28-2014, 11:12 AM   #5
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Aaaah thanks guys i am building a saltwater tank i bought the tank second hand and that came with it, i was curious what it was
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Old 04-28-2014, 11:19 AM   #6
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Are you going fish only, or reef tank ?

Do you know about cycling, params, etc. ?
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Old 04-28-2014, 11:32 AM   #7
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Going with reef

And yeh i no about cycling i had a freshwater set up but i have converted i got a fee corals with the tank and a small amount of live rock i just need to build it up slowly plus the tank came with skimmer and i bought a new wave maker for it.
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Old 04-28-2014, 11:41 AM   #8
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Ahh ok, good, don't hesitate to ask to us if you have any questions about anything.
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Old 04-28-2014, 11:54 AM   #9
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Thanks i have a question actualy i dont have a r/o system yet so how do i top up evaporation in the meantime as i am told not to use tap water due to the chemicals
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Old 04-28-2014, 12:02 PM   #10
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Quote:
Originally Posted by N.Galvin View Post
Thanks i have a question actualy i dont have a r/o system yet so how do i top up evaporation in the meantime as i am told not to use tap water due to the chemicals
Unfortunately, you have to top up with the purest water possible.

Just go at the grocery and find "Distillated water" Or "Reverse osmosis water" bottles, make sure they don't have been remineralized after the filtration process.

Else you can start your tank with the good way, purchase a 3-4 step RODI unit, fill all the tank with clean water, that's a good start point. Else you'll start with a tankfull of tap contaminated water...

For freshwater, we don't care about using unfiltered tap water in most of the time, but in a reef this can make an huge difference. Imagine if your tap contains >10ppm nitrates... Your reef lighting system will cook some brand new algae everywhere...
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