Post by naclh20nut on Sept 23, 2009 6:19:11 GMT -5
After the last swap one of the new corals started turning white and now looks dead. That was several weeks ago. Chalked it up to a problem with it.
Now, yesterday came home and noticed a purple something from the first swap this year turning white at the base. This piece has over tripled in size and was looking great. polyps were out alot, and growing new branches. Nothing has changed in tank, no chemistry issues, no new fish, no new corals, no new placement.
Is this a problem that I should be looking at, or does this happen. I am new to the hard corals.
Oh it's quite typical of first time SPS keepers. We all went through it, it's caused by some form of instability, I don't know what it is but IME it was my alk and cal levels falling faster than I could stabalize them. This is why anyone trying to keep SPS should invest in several pieces of equipment. A calcium reactor and some form of controller for it, temp, and lighting. In short SPS hate change, minimize this and you will tend to have better luck with them.
You need to check your Mg levels as well. If the Alk is unstable it could be a deficiency of Mg leading to that. Calcium by itself will not lower pH in fact it will raise it and can raise it to dangerous levels. If there is good SPS growth and then pH and Alk start to fall off it's likely a result of the increasing demand of the coral as they grow.
Post by naclh20nut on Sept 23, 2009 11:51:16 GMT -5
Test results- PH 7.8, alk- 9, cal- 480, amm,trate,trite- 0, the alk has been stable for months now that Ron told me to use the 8.4 on a regular basis. I have been adding about weekly as I test but missed it by a couple of days but only PH dropped. I have never checked Mag. I will bring in a sample if you can test it.
I added a little extra 8.4 today. Calls for 3 capfuls I put in 4. Will retest in the morning and add if needed. I know that I need to bring PH up but slowly.
I think it would be best to start two new threads one in the SPS forum to discuss requirements and problems with SPS and a new thread on pH/parameters in the chemistry forum. The only reason I suggested the questions be posed in those forums is because people who moderate those forums and view them may have a better understanding of the issues and be able to give better advice, since most people on this board keep LPS/softie reefs. Chemistry and stabilty are much more important to SPS reefs than other reef types.
The tank may be getting too hot, SPS when they get too hot expell the Zoethllll.......how ever you spell it. They expell the aglae food they produce thus getting no nutrients. This will cause them to start losing tissue. I would back down the temp about two degrees keep between 79-80. Get a fan or something to help with the heat during the day.
i would add a kalk reactor to the set up and keep track of cal and alk if still not enough add a calcium reactor to make up the differance, a good controller like a neptune apex will control all your aquipment like lights, temp, and calcium reactor ph, and then some, the price seems high but the results will astound you. good aquipment make all the differance in the world trust me.