[MENTION=3886]watchguy123[/MENTION]
How often are you testing your parameters?
Typically alkalinity 2-3 times a week via Hanna checker, nitrate 2 times per week either salifert or red sea pro ( I aim for around 5ppm so sometimes I'm above the red sea threshold of 4ppm and if so then I use salifert), phosphate 1 time per week via Hanna ULR Phosphorous. I just got back from 10 days of visiting family and all survived in the tank. Actually, two frags that I had just cemented on the rock work before I left were missing in action, RR Rainbow Blossom and RR Canada Lady in Pink. I found the former but not the latter. I have rambunctious fish and they crash into the sps on occasion. But no death per se. Having the RR Canada Lady in Pink lost in the tank somewhere is a hard loss, not easy to find and it was so darn costly.
Couple pictures of something almost no one recognizes anymore. It is an oldie, Tat's Psammacora. And yes this is a psammacora with pretty nice polyp extension for being in the middle of the day. Most guess it is a hydnophora but by all means it is not--two very different critters. Hydnophora are neither as pretty, nor as friendly. Hydronophora have nasty long stingers. Tat's psammacora is all green which also means it does not get much love from the hobby but I like it. It is extremely hardy and a pretty good grower. These are pictures of a very happy acro.