Little Rimless Radium Tank - 2 years of progress

Beautiful tank! I can't believe you have two 250 watt Radiums over a 36" tank that's 12" tall without scorching your corals.

Great job!
 
Mammoth,
Congrats on your TOTM, and very sorry to hear about your issues here of late. Do you think it was the heater causing the issue?

You know, one thing I notice once in a while with otherwise very healthy SPS systems is an RTN/STN event like what you had, which I experienced myself as well in a 300 gallon a couple years ago. One characteristic of many of these events is that the tank is very mature with large colonies and a lot of different species of SPS.

I have always wondered if these colonies have become so large, with such a great amount of allelopathy between the corals, in such a limited amount of water that is in a reef tank compared to the ocean, that it triggers an event like this? Kind of like the water reaches a critical mass in the stuff coming of the corals, maybe more than can be handled by traditional methods of reef filtration.

I could not find a definitive cause of the meltdown I had in my 300 gallon. I have just noticed this happening once in a while in mature SPS reefs with a wide variety of acros.
 
Thanks again guys.

@AcroporAddict It's really tough to say. Before I made the move I started to have stability issues which I believe were the result of exactly what you are describing. It's why added the larger frag tank on just to give myself more gallons and dilute the water. Things were fine though I was able to get ahead of it. Everything really fell apart though after the move. Looking back I see a few things I could have done that may or may not have helped, but moving forward I won't migrate another tank the same way. I'm not quite sure what went wrong. I've moved tanks or migrated to bigger tanks dozens of times before without ever having a similar issue. If I could do it over again. I would have left the 67 alone taken the frag tank offline and put the new tank it's place. Then plumbed the 67 into the new tanks sump and slowly moved things over from the 67 to the new tank at my leisure. It would have been the smallest disturbance to everything.

@tmantaylor18 Thanks! I'm just here for a couple days. I try to visit a few times a year when the 120 is open. Although no sunnyvale for me can't skate for 5 more months since the surgery so I'll have to wait until after the winter before I get to visit your skatepark!
 
Thanks guys! Had a great weekend in SF. Met some reefers from the area, picked up some great frags, and I'm off and running again. A couple small tweaks this time. I've complicated things a little bit with the addition of an Gigantea and I've been carbon dosing to clean up the tank and get everything back where it needs to be. I think I'm going to keep carbon dosing but I'm going to run a bit less then I have in the past.

As far a a treat?! Hmm.. I picked up a "has a ton of potential" piece from a store in the Bay Area. It's some sort of Aussie stag supposedly the piece came in 3 months ago. Almost all died off then slowly healed in there system. It's a bit brown at the moment it's one of those pieces that has a purple tint to it even under natural light so I'm hoping it will colour up very nicely over time. The real treat however is I've been sticking to true to my guns and dipping all corals before putting them in the system so far not a AEFW on the bottom of any bucket!
 
I haven't been to Diablo or Ultimate Aquarium. I'll have to check those out.

Are you starting a new tank up or are you going to use the same setup as you've had all along. I always admired your reef, your recent problems were difficult to read about.
 
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