1 Rock, some sand, small skimmer. Regular water changes high watt halide, sps = My tank of death. To much, to fast. 2004. Bacteria bloom, algae bloom.. all dead.
What caused your bacteria bloom?
What caused mine?
1 Rock, some sand, small skimmer. Regular water changes high watt halide, sps = My tank of death. To much, to fast. 2004. Bacteria bloom, algae bloom.. all dead.
What caused your bacteria bloom?
What caused mine?
To hell with this, this is stupid and pointless. Take any stable tank, put too much labile organic carbon in it all at once, watch what happens.
End of discussion.
Both of our bacteria blooms were caused by adding to much of a food source (carbon in your case) for the bacteria present in your system in unstable ill equipped tanks to handle the increased bacteria,
(the bacteria was then consumed by the algae hence the green water)
However from my understand (and I say this with confidence but not with 100% certainty). The cause of demises in both our tanks what not the bacteria bloom it's self, but the oxygen being rapidly depleted.
Your quick action saved yours, and I hope your UV filter will keep things in check. (I've used ozone but have no experience with uv filter so it may do the trick I can't speak one way or the other on it)
What did your ORP test at when you said all your parameters were on par?
What I notice here if yes you say the tank was cycled 2 small piece of non-porous tonga branch, from Nov?
Do you not feel that when you add corals, or pieces that have a mass that is significantly equivalent to that of the sum of your rock that you're tank will not re-cycle?
While I agree the presence ammonia is what people test for in terms of cycle completion. I don't believe we can assume that solely the lack ammonia is a sign of stability and the completion of "cycling" for an SPS capable tank. This can be compounded by large water changes (100%) where you are removing anything beneficial that is present in your water leaving you with very little surface area for things to re-cultivate from.
Well.. that about sums it up. I'm stupid discussion, debate, and conversation with me is pointless. I'm glad you can share your tank with us. I wish you the best of success. I look forward to future updates but will not participate in the discussion.
Take care, and I do hope hope there are no hard feeling on a personal level. If we ever meet at a conference, drinks are on me!
-B
Simply adding more rock from the start, letter the tank cycle and taking things slow as every body suggested and he could have avoided this whole situation. He would have had a much more stable system which would have made such drastic measures unnecessary.
Not sure if it was mentioned in this thread, but on one of the blogs he mentioned it spiking to over 9.did i miss something? imo 8.4 is not a worrisome upper ph limit.
Neither have I and I agree on the way cooledness. Very impressive that everything seems to have weathered the storm!As it is, I think its way cool that his tank went green pea soup. Never seen that before.
Your quick action saved yours,
I'm not by any means disagreeing that one can over dose on a carbon source. How much of a carbon source will equate to over dosing based on your system however is something I'm sure we could go back and forth on for days.Not ill-equipped to handle the increased bacteria, but the increased carbon. Ask Randy what happens when he adds too much vinegar, or Rich ross when he had to drop his pH with a gallon of vinegar. They also get blooms.
No idea. ORP is mostly black magic, in my opinion, unless you are directly controlling ozone. My guess is it wasn't great simply because of the hetertrophic bacteria consuming O2 and making the water less oxidizing. The green water likely did the same at night.
And that large, very porous Porites rock (only the front is a veneer of encrusted Porites, it's a chunk of live rock for all intents and purposes). I also I'm not sure I've seen the porosity of branch rock quantified relative to other forms. Think about scale here. People are going bats*** because it only has three pieces of rock in it, now look at the full tank shot and imagine it scaled up to something like a 150. People also forget that LIVE coral skeletons are incredibly porous themselves and have everything from bacteria to endolithic algae living in them naturally.
An Acropora is a micrometers thick layer of tissue over a relatively huge, porous skeleton that is a biofilter in itself. So, in short, No. In fact, I would have had no qualms about not using any live rock at all in this system. I have run successfully Acropora growing systems with ZERO live rock or biofilter to speak of. I only used it to mount frags on above the bottom and I like the look of branch. Die off from the rock is what caused the ammonia spike to begin with.
Again I don't think GAC is a replacement for rock. It's something you replace. I just don't see how that would work for long term stability.We can quibble all you want about the semantics of timing, but to me, the video speaks for itself, there was no random crash going to happen if I maintained things the way they were going. That's the other thing I have been trying to get across. Very little, rare food additions occurred, the skimmer was ripping (again think about scale), and I used tons of GAC relative to tank volume..
I'm not sure I agree with this that the corals themselves could be utilized in such a way
however I have no means to prove otherwise outside of my experiences with attempting to setup minimal rock tanks so we would just butt heads if we continued down this path.
In regards to the tank with no rock, or biofilter I've done that as well but only on a temporary basis. How long was this tank up for? What was it used for I. Are we talking years, weeks, or months? What were the other circumstances around the tank? To say you can setup a tank with no rock at all (note rock not live rock) I believe is a rather bold statement.
Again I don't think GAC is a replacement for rock. It's something you replace. I just don't see how that would work for long term stability.
Lets go back and talk about the original issue, your PH. As all this stemmed from an over reaction to PH. Why do you think you found your self in a situation where you PH swung so rapidly and such a large amount? Do you not think a more stabilized system would have minimized the swing or was it an external source that caused the swing in the first place. I know once my tanks settle in my ph very rarely moves by more then .1 or so. I honestly for the most part dismiss it.
I know others may not agree with this but I classify my water parameters into different groups.
There are those that are essential sustainability of organisms in my tank, (temp, salinity, amonia, nitrite)
Whether you agree or not has nothing to do with reality of porosity, mass, density and surface area to volume ratio of hermatypic coral skeletons, which host entire communities of endolithic organisms, much less simple bacteria. It ain't rocket surgery. Look at the tank Thales posted on page 6:
http://www.reefcentral.com/forums/showpost.php?p=19757615&postcount=136
It is run in EXACTLY this way. And has been up for years! I know this from seeing it in person every year for the last several. It grows Acropora like weeds.
I have evidence I'm correct, you have no evidence that I am incorrect. It's pretty much as simple as that.
Just UV, skimmer, lots of flow, and frags/corals. Same as the tank Thales posted (except he doesn't use UV)!! You're willfully ignoring the facts that are being presented to you.
That's because it's not a replacement for rock. No one said it was. it's chemical filtration, not biological.
Did you actually read the blog post? A top off powerhead accidentally sucked kalkwasser slurry directly into the tank. So the short answer is NO. Again, willfully ignoring facts presented to you.
I posted the last 5 days from my Apex so you can see what my normal pH cycle looks like.
I'm sorry, but alkalinity and pH absolutely belong in this category.
I would never try to control my ph by chemical means I would try to correct the issue that is causing my ph to be off in your case you added kalk slurry which in theory spiked your alk. Had it be me, I would have been testing alk and figuring out the best way to deal with returning that to normal and thanking for ph for giving me a heads up but making no efforts to modify it on it's own.
This represents a very fundamental misunderstanding of the difference between carbonate alkalinity and pH and how kalkwasser produces carbonate alkalinity. Without sufficient carbon dioxide to quench the hydroxide present from CaOH2, free OH will remain and the pH will remain high with minimal effect on the carbonate system alkalinity until enough CO2 had been drawn down to quench the OH-.
On another note the tank linked above clearly is attached to a larger system and not simply a stand alone bin with a couple racks and some corals. I can also see rock under the egg crate.. sooo who knows.
Again this is where we just don't see eye to eye. So there is no point debating it, we won't get anywhere. You have your "one truth" and that is that. not to pick a fight but you've been dismissing the questions who's answers aren't favorable to your point.