Can you switch sea salts?

[CACtheAmazing]

I started my reef tank, 40 gallons, about a 2 weeks ago. I had done a lot of research around on the internet and books etc. Well I also relied on a friend of a friend who works at the store where I buy my fish supplies who is an experience aquarist with reef tanks. My question is directed at sea salts, sorry to those who are tired of hearing about these. The type of salt he recommended for me and I ended up using is Oceanic Natural Sea Salt Mix. There seems to be A LOT of precipitate which forms on the glass and on some of the live rock which are now turning white (though i've been told and read that the live rock turning white at some point sometimes happens during the cycling process). All parameters are fine. I want to know if it is ok to mix sea salts or do I need to do a complete water change? I'm not really happy with this current sea salt, even though it may be working just fine at this point, and am considered changing to Red Sea Salt. I've come to this conclusion based on reviews I've read on the product and from other aquarists that I've talked to though none seem to know the answer about mixing the two different products. Considering that reef systems are very sensitive I would assume that I need to do a complete water change. Any advice or answers to this would be great! Thanks!
Chuck

[Geoff]

i have switched salts a couple of times over the many years i have done this. i have found that if you do large water changes then you can run into some serious problems. if you really want to change salts start small. then over time you can increase the size to what you have been doing. i would not try and change all the water. over time the water will be changed out. the more gradual you do it the better.

i prefer Instant Ocean.

G~

[Homer]

I too have switched salts and have not had any issues. I buy what ever is the best price of the name brand stuff: Instant Ocean, Reef Crystals, Crystal Sea.

Homer

[Doug1]

I have always used IO but I know people that shop price, if you are doing small water changes <20 % at a time once a week or so you will prolly be OK. I wouls be really leery of having to do a mojor emergency water change with a different salt mix tho, FWI