Raising and lowering salinity to fast?

[naka]

I did something stupid yesterday by leaving my wc valve open while filling it w/ RO water. When I got home this morning my salinity dropped to 1.017!!! I panicked and raised it back to 1.024, but raised it in 3 hours. Has anyone done something like this before? I'm concerned about my corals, but all the polyps were extended when I left earlier. I guess this is what happens when my mind is somewhere else.

Thanks,

[JB NY]

I've alway thought it would be bad to raise the SG too quickly. But then I think that many corals, in the wild, are exposed to the air during low tide and I'm sure sometimes it's raining and they probably don't die, so your probably ok.

[invincible569]

naka, I have done this about 4 times with my old 100g and it was full of SPS. i thought i was going to kill some corals, but nothing never happened. Think of it this way... its like you buy a coral from a store which is 1.023.. then you take it home and acclimate to 1.026. The coral survives. You may be ok. Just bring it back to your nomal salinity levels.

[t0mmy108]

don't you guys remember? I did the exact same thing and wiped out most of my corals from going back up too fast. Mine dropped over the course of a weekend from leaving a RO line on to top off and nothing had died until I brought it back up over a couple hours. You haven't replied in a couple days. What happened?

BTW: I forgive you. CONGRATS on your new BABY!! You never told me boy or girl. Name?

[naka]

Thanks Tom, everything is fine now. All the corals/fish are doing great. I panicked and raised the salinity really fast, and got lucky.

Here's my son Noah.
http://img299.imageshack.us/img299/3640/dsc02798gl2.jpg

[invincible569]

By the way.. get a Kent float valve and have it auto shut off into a separate reservoir. Then like mine, just have the auto leveler fill it up when it drops. I never had any problems since.

[asm481]

I too overdosed my tank with RO/DI and in a panic raised it quickly. I actually think the quick raise was better as the tank had not adjusted to a lower SG yet. If it was low SG for a few days I would assume slow increase better. Think of a hurricane over a reef. Lots of fresh water that locally must decrease the SG for a short bit.