Nope I'm using reefers Best. But at this point I'm not sure why I'm using such an expensive salts for what is esentially a fish only system

J

Perhaps you can try a mini-reboot to the system. Take a few pieces of LR and a couple of coral and put them into a completely separate and brand new 10 gallon system, for example, and see what happens.

Sorry to hear about this Jason.
When I read this my immediate thought was perhaps some kids used your tank as a wishing well or as Snaz said something is leaching into the system.

Sorry to hear about your losses.

Some thoughts that come to mind that might be worth consideration.

Stray Voltage?
Recent MH bulb change and bad bulb (rad++)
Painted or lead objects in tank
R/O problem ( bad filters)
Change in air quality ( something in air) air conditioning etc.

Good luck
Kevin

I had a bad batch of RBS. I think if we get the top or bottom of the batch it might not be mixed well.Heavier elements will settle to the bottom and it is something we dont test for.Also small amounts of something over time could build up to toxic levels.

Believe me, I feel your pain. My coral continues to kick the bucket one species at a time. Hard to kill a hammer coral, though.

I'm looking back at myself and realizing that the tank was doing it's best when it was new. Now, two-three years in, things are more difficult. So what has changed? I'm going hard after accumulations of things...That means vaccuuming sand beds and siphoning detritus out of places I couldn't reach before.

I'm scraping walls of the sump removing millions of tubeworms...trying to reset the system back to the way it was when I started it.

The only other variable that has changed for me is that the fish are now MUCH larger and produce significantly more waste than they used to. I don't quite know how to deal with that one, if it is related to the problems.

So...it sounds like we are dealing a similar problem, although you seem to be having a bit worse time than me. SOME of my coral seems to be doing OK. I don't think you will find your solution in measurable water parameters.

Jason & Brad,

I have 2 3' x 28" x 22" 91g tanks sitting empty if you want to borrow & set up to try to save your corals.

Let me know. I also have some spare equipment to go with those tanks to set them up for a while as you try to get things under control.

Anthony

Just curious, how old and how deep is the sand bed?

That F'n buffs balls!

I was thinking sand bed also and bad bulb.

My Sand bend is an inch to 1.5 at best.

Thanks for the offer Anthony I might just take you up on that

cprowler, You made me laugh. Good to see you around.

J