A stupid question regarding protein skimmer

[mrhasan]

Thanks

Actually I am running a rio nano skimmer in my 20 long and its sucking up good amount of junk esp after adding few frags of softies (good that it has a big cup compared to some other HOBs) so thought whether or not I need to replace the same amount of water with saltwater.

[Myka]

Just check your salinity. If you find the salinity has gone up by 0.001 add some freshwater. Make sure you are using a hydrometer that has been manually calibrated or a refractometer that you calibrated a few times per year.

[mrhasan]

Yah I do that

BTW did you refer "manual calibration of hydrometer" as checking the reading with freshwater?

Originally Posted by Myka

Just check your salinity. If you find the salinity has gone up by 0.001 add some freshwater. Make sure you are using a hydrometer that has been manually calibrated or a refractometer that you calibrated a few times per year.

[Myka]

Originally Posted by mrhasan

Yah I do that

BTW did you refer "manual calibration of hydrometer" as checking the reading with freshwater?

No, that is not a good way to do it. A hydrometer should be checked against a calibrated refractometer. If you don't have a refractometer your LFS should be able to check your hydrometer against their own refractometer. Just politely ask when they last calibrated their refractometer before using it to calibrate your hydrometer.

[mrhasan]

Ooooo...yah that's a good idea....but hopefully in sept I will be buying a refrac...they are pretty cheap in ebay

[Myka]

Yeah, you get what you pay for though. Sometimes you're better off looking for a better brand in the used classifieds.

[mrhasan]

Yah I do keep an eye out. Being a student (particularly an international one), I have to keep my eyes towards the cheaper side :P