salinity issue

[daniella3d]

What water are you using to do your dosing? if it is done with RO water then the only element added when dosing should be calcium and alkalinity, not salt.

I dose 100ml per day of both calcium and alkalinity and my salinité does not rise at all. I have a top off system with RO water and the water I use for my Bulk Reef Supply 3 parts dosing is also RO pure water.

My salinity stay exactly the same, even after 6 months of dosing daily.

How can dosing calcium and alkalinity in pure RO water cause an increase in salinity? Salt creep usually does the opposite and make you lose salinity over time.

Also what are you using to mesure your salinity? Is it possible that your instrument is going out of wack? Some refractometer have temperature compensation but some don't, so if you are now testing at a different temperature or if your refractometer is not well calibrated, it could give you false result.

I am also surprised that you have to dose so much calcium with the BRS 2 parts in a 55 gallons...how many clam or sps do you have? That seem high.

Originally Posted by spawn

Over the last 5-6 weeks the sal. level in my tank has started to climb on a weekly basis from .026-.028 by weeks end. I think it is due to the amounts of Ca which is dosed at 253ml per day & the Alk which is dosed at 184 ml per day into 55gal GWV. The thing of it is My Ca levels have been on decline for at least the same time period maintaining only 360-380 alk is quite steady @ 7.6-7.8. With dosing these amounts, I'm positive the dosing amounts are exceeding the top off amount causing the increase in the level of sal. Does anyone have any suggestions on what to do about this?