Reef Sanctuary - View Single Post - How to Make a Safe Water Change for Marine Fish

leebca · 10-12-2007, 06:34 PM

Adam,

Generally speaking it can go either way. The pump (after 48 hours) will usually have warmed the water. After a week of mixing it may be warmer than the marine system. Salinity does change with temperature, but I envision that there is a significant higher probability that the hobbyist will not hit the salinity right on, but need to tweak it some.

If the pump sends enough heat to the water and the hobbyist has to add more salt and mix longer, the temperature would need a second adjustment if it was first adjusted. The proposed method requires one temperature adjustment with likely little effect on the salinity. BUT if you are dealing with a great temperature difference between water and marine system (like mixing new water outdoors during the winter) your way would be the wisest choice.

10-12-2007, 06:34 PM	#6 (permalink)
leebca Cabbage Leather Join Date: Jul 2007 Location: So CA Posts: 391 View Gallery Karma Komment	Re: How to Make a Safe Water Change for Marine Fish Adam, Generally speaking it can go either way. The pump (after 48 hours) will usually have warmed the water. After a week of mixing it may be warmer than the marine system. Salinity does change with temperature, but I envision that there is a significant higher probability that the hobbyist will not hit the salinity right on, but need to tweak it some. If the pump sends enough heat to the water and the hobbyist has to add more salt and mix longer, the temperature would need a second adjustment if it was first adjusted. The proposed method requires one temperature adjustment with likely little effect on the salinity. BUT if you are dealing with a great temperature difference between water and marine system (like mixing new water outdoors during the winter) your way would be the wisest choice. __________________ LEE