Thanks Ben,
Crisis Overted
I'm nearly temped to swear here at my own stupidity, Friday evening I saw a large turbo snail fall from high up on the rock all the way down to the tank bed. Thought nothing off it as these snails can right themselves after a fall, right. I left the snail there and went about my business. Just before going to bed I checked the tank again and the snail still hadn't moved. "I'll get it out when the lights come on tommorrow" I thought and went to bed. Next morning I inspected the tank and sure enough the snail was still upturned, and this time shrimp, crabs and the tenticales of the maze coral were all attending to the snail. "The snail is defo dead" I thought, "I'll just wait until the lights come on then I'll remove it". (mistake) An hour later there was an almighty smell comming from the tank (like rotten eggs) Phew. The acrid smell was spreading around the house. Action Stations I quickly whipped the offending dead snail from the tank (worried about loosing hundreds of pounds worth of stock) Things were manic during this time. I run off some RO water and made up some salt solution as quick as I could, barely giving it time to mix (two powerheads and a heater and a large ladle were employed) Once the SG was right and the heat was equalised I changed 12ltrs of water in the tank. The tank was still smelling bad, I performed this proceedure a total of four times (48ltr exchange in all) I also placed an airline feed into the sump/refugium and reduced the water level in the main aquarium so as the spraybar return greatly aggitated the water surface for more gas exchange.
This senario played itself out during Saturday and I think I've managed to save everything. All stock looked fine during the process except for the Xenia which initally alerted me to there was something just not right. But I think I've managed to save this also.
Stand Down
Phew, after a few adreniline fueled hours running to and from the garage mixing RO and waterchanging I have managed to save the tank in its entirity. I shudder to think what might have been if I hadn't been on hand (being a weekend and not a work day). One darn snail, one pesky little dead snail and my reluctance to act quicker could and would have nuked my tank. Doesn't bare to think about.
A Big Lesson learnt here I think, a wakeup call of titanic proportions. I pride myself around being vigilant with my fish tanks and always have done over many years but in this instance I was lax and not tuned into the fact that on this side of the fence any abnormalities need and must be dealt with immediately otherwise you may stand to loose quite a lot.
The tank is back to being sweet again, the acrid smell is a thing of the past and all the corals,critters and fish seem a lot better for the massive water exchange.
But to reitterate I shudder to think what might have become if I hadn't acted so promptly. The smell was not there on the Saturday morning and enveloped the house quite quickly (within an hour) Doors and windows had to be opened to rid the house of this awful pungent aroma.
This is a lesson I wish to publish not only for me but for all you budding aquarists out there, that to always be vigilant keep an eye on your pride and joy notice everything thats going on both in and around your tank and be quick to act to any emergency which may arise. Anything dead or dying dont leave it in there, extract the offending article immediately. Thus reducing the risk.
I am a great advocate of having your own water (RO) on hand for such emergencies as without it I would have been up the creek without a paddle.
Sorry for such a long post but I wanted to make sure everyone was aware of at least one of the pitfalls (if your not careful) which can befall your beloved aquaria
Regards
BigC