need to raise my SG

[Koddie Doo]

bought my refragometer today and my sg. is 1.022 and i need to raise it (darn Hydrometers) how slow should i raise the sg. without hurting the fish?

[Paintbug]

just use saltwater to top off the tank with. but dont raise the SG more than .001 per day.

[Fly Guy]

I would just raise it by instead of adding fresh water to account for evaporation, add artificial saltwater to your desired SG until it is there

[Wiskey]

Originally Posted by Fly Guy

I would just raise it by instead of adding fresh water to account for evaporation, add artificial saltwater to your desired SG until it is there

Me too.
Whiskey

[Geoff]

how big is the tank? i would just start putting a 1/4cup of salt in the sump once a day untill the desired S.G. is reached. put it as far from the return pump as possible to give it more time to mix before hitting the display.

i do this all of the time to counteract the 1gallon of skimmate i remove from my tank a day.

3/4 cup of salt raises my 150g total system about .001

G~

[afbengochea]

i thought it was bad to put the salt straight into the water column or was i told bad info?

[combiemaster]

it can clog your return pump right?

[Geoff]

it is only really bad to put large amounts of salt in one place at a time. if a pile of salt is allowed to form on the bottom of the sump it will cause the Ca to fall out of solution and become a crust on the bottom. if poured in slowly over a large are in the sump, than there no harm putting the salt directly into the system.

the same thing goes for mixing salt for WC. if you are getting a white crust on the bottom of the WC container than you are dumping to much in to fast.

G~

[wharyat]

You never want to put salt directly in the main tank with inhabitants; as it may land on corals/inverts and you'll see the slug+salt effect. Dumping it in the sump allows it to dissolve before it gets to the main tank.

[Hardhead Cat]

In my opinion if you want to raise it very conservatively, do a small water change with the sg higher, like 1.026 - and continue doing that over a period of a week or more. Depends on how much you change out - but do it slowly to avoid shocking any inhabitants.

HHC

[hng]

I agree with using salt water for topoffs, seem like the easiest and safest thing to do to me. Anyway, you probably need to mix up some ASW for a water change eventually anyway.