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Old 02-04-2009, 11:54 AM   #1
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Gravity is to high

I am not sure why but my gravity keeps going up?

When the tank started it was 1.023 but now two weeks later its at 1.028

it was as high 1.038.

I add non salt water to bring it down to 1.024

its now back at 1.026

Am I missing something?

I have not added any additional salt.
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Old 02-04-2009, 11:57 AM   #2
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Are you topping off with salt water?

Also, evaporation can make the salt reading rise. Water evaps, salt stays there.

Also, I'd recommend a hydrometer to read with for more accuracy.
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Old 02-04-2009, 11:59 AM   #3
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I topped off with RO water no salt because it was high.

I have a Hydrometer

Maybe I need more RO added? I have probably another 2.5 or 3 gallons siting there I can add should be room.
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Old 02-04-2009, 12:17 PM   #4
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Is your temperature stable? With a hydrometer readings will vary depending on the temperature of the water. That's why many hobbyist recommend using a Refractometer for a stable reading.
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Old 02-04-2009, 12:31 PM   #5
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What size tank is this. 2-3 gallons of "room" could mean a high swing on the gravity reading.
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Old 02-04-2009, 02:33 PM   #6
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My question is how long do you let your saltwater mix stand before you add it to your tank when you do i PWC?
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Old 02-04-2009, 03:41 PM   #7
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75 gallon new set up. So I have only done two changes + some top up with RO water.

I had the salt water in the tank with nothing (except a raw shrimp) but water for two weeks then I added about 30 pounds of LR (yep I know I need more cant find any) and 80 pounds of sand

It sat for about two more weeks and I added a Clown.

The LR I added came from an already established tank.

The water changes I did where from LFS bought water at 1.022

The temperature seems stable from what I can see (don't really see it go up or down)

I have two pumps pushing water using Enium classic to filter it.

Temps 79.
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Old 02-04-2009, 04:12 PM   #8
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Top off every day w/ RO water. Evaporation causes SG/salinity to rise.
Also, look at ditchingt your hydrometer and getting a refractometor. They're more accurate. If you don't rinse the hydrometer w/FW after every time you use it, it may give bad readings as well
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Old 02-04-2009, 07:01 PM   #9
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Two weeks is kind of early to be adding any fish. How is the clown doing? It seems to me that you need to do a water change, 10% or so and see if that brings the SG/saliniy down and stabe. You need to check for ammonia, nitries to see how far along you are in the cycle!
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Old 02-04-2009, 09:42 PM   #10
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clowns are doing great they havbe paired and seem very happy.

They aggressively take food have found a little home but explore the rest opf the tank.

I added about 2.5 gallons of RO water and will do some measurements tomorrow with post
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