salinity monitor lower than hydrometer why???

[Hendersonracing]

I just bought a salinity pinpoint monitor it reads 30.9 which is like 1.014 on the scale...my hydrometer reads 1.022 wonder why such a difference????If its only 1.014 that is extremely low...what should I do?????I thought about adding a little more salt to my wc this time to accomodate the lower salinity????

[Geoff]

did you calibrate the salinity monitor? if so than that is not overly surprising. this is why those hydrometers are not recommended. refractometers and salinity monitors are the way to go.

as long as you do not raise the temp any faster than .001 a day you will be fine. no reason to hurry, but it should be raised to your final salinity. i prefer 1.026, but anything between 1.023 and 1.026 is fine. try adding a cup of salt a day and see how quickly that raises it. on a tank of that size prolly not much, but that is a good thing.

G~

[Hendersonracing]

I did calibrate it it recommends calibrated to 53.0 which is 1.026 Im at 30.9 I have a long way to go...although I haven't lost a fish yet....so Im sure the monitor is right....I may buy a refractometer just to make sure they are really inexpensive...thanks alot Geoff you have been alot of help...

[Loverotties]

Geoff is quick and with the right answers!

[three90s&125sump]

30.9 salinity is about 1.023


http://www.saltyzoo.com/SaltyCalcs/SgPptConv.php

[Hendersonracing]

this is the monitor sheet...did I miss something dont you use the first column????

[Hendersonracing]

PINPOINT™ Salinity Monitor
Conversion Chart

PINPOINT Salinity mS	‰ Salt (ppt)	True Specific Gravity

30.5	19.00	1.0136
31.0	19.30	1.0139
31.5	19.70	1.0141
32.0	20.00	1.0144
32.5	20.40	1.0147
33.0	20.70	1.0149
33.5	21.10	1.0152
34.0	21.40	1.0155
34.5	21.70	1.0157
35.0	22.10	1.0160
35.5	22.40	1.0162
36.0	22.80	1.0165
36.5	23.10	1.0168
37.0	23.50	1.0171
37.5	23.90	1.0173
38.0	24.20	1.0176
38.5	24.50	1.0179
39.0	24.90	1.0181
39.5	25.20	1.0184
40.0	25.60	1.0187
40.5	25.90	1.0190
41.0	26.30	1.0192
41.5	26.70	1.0195
42.0	27.00	1.0198
42.5	27.30	1.0200
43.0	27.70	1.0203

[Hendersonracing]

this is just 1/2 the chart It wont let me put the whole chart on ....but dont you go straight across????or do you find the right monitor in the left column and translate it to the 2nd column for the reading?????

[three90s&125sump]

I have a monitor that reads both salinity and SG and I keep my salinity at about 30 and when I switch it to SG it reads between 1.023 and 1.024.

[three90s&125sump]

http://www.saltyzoo.com/SaltyCalcs/SgPptConv.php

I would believe this link.

[Hendersonracing]

Originally Posted by three90s&125sump

http://www.saltyzoo.com/SaltyCalcs/SgPptConv.php

I would believe this link.

this is the one I bought from Foster & Smith

Continuously measures dissolved salt levels in your tank. Reads in microsiemens (mS), but includes a chart to cross-reference to both specific gravity (S.G.) or ‰ salt (ppt). Includes a 53.0 mS reference


does this help? I hope just dont want to over add if its suppose to be 30?

[Hendersonracing]

I wonder If thats the ppt reading on my monitor????has anyone use it before)a monitor like that)????

[Hendersonracing]

foster and smith said the reading on the monitor was a ppt reading which would put me right there! @ 1.024

[three90s&125sump]

Originally Posted by Hendersonracing

foster and smith said the reading on the monitor was a ppt reading which would put me right there! @ 1.024

Good thing you didn't bring it up to 53.

[Hendersonracing]

she didnt sound to confident of herself she had to ask alot of people...I hope shes right!