How bad did I screw up?

[Carlon]

I have been dosing BRS calcium and just switched to Red Sea. I have a 125 RR with a Emerald 34 sump. After testing and addding Ca then testing again, I used the BRS calculator to find that using 89gal was the total system water volume. After being away from my tank I tested and my Ca was at 393. I added 25ml of the Red Sea and now my Ca is at 467. Based on my math, 25 ml should have raised my Ca to 407. I waited 15 min before testing. I will test again later but if the number holds true how bad will things get? I have a mixed reef.

 

[reacclimating 2 the hobby]

hard to say really... i'd keep a close eye on things to see how they adjust. If you get any bad feelings I'd do a water change.

 

[jda]

You are probably OK. A swing here or there don't really cause many issues, IME... but swings all the time can.

 

[rkpetersen]

I have been dosing BRS calcium and just switched to Red Sea. I have a 125 RR with a Emerald 34 sump. After testing and addding Ca then testing again, I used the BRS calculator to find that using 89gal was the total system water volume. After being away from my tank I tested and my Ca was at 393. I added 25ml of the Red Sea and now my Ca is at 467. Based on my math, 25 ml should have raised my Ca to 407. I waited 15 min before testing. I will test again later but if the number holds true how bad will things get? I have a mixed reef.

As long as you didn't also dose alkalinity, you may not notice any change at all. Corals don't respond to swings in calcium level as negatively as they do to alk level. Also, 15 minutes probably isn't long enough for equilibration; after an hour or two it may be more in line with your expectation.

 

[André Brasil]

Corals are actually nice...they don't hold a grudge. Just say you're sorry and you won't do it again and all will be OK!

 

[Carlon]

I am waiting a few hours before dosing ALK.