Dinoflagellates.

I'd like to share something with you guys that I think is important.

First I'd like to introduce the Coccolithophores. (Emiliania Huxley)
They are about 5 micron and 5 times smaller than e.g. an Ostreopsis dinflagellate.
I noticed a bloom out of the coast here in Iceland at the same time I was jet again looking for a reason for my constant low calcium level.
It was like many puzzles found their place at the same time and the big picture became clearer.

The ocean is rarely transparent and it's color will tell a tale of what is going on. Same goes for our tanks.
A slightly yellow or brown could be low amount of dinos or diatoms, various intensities of green could be algae, white or cyan/turquoises calcareous algae and red a dense dino bloom.

Of course we have these white coccolith blooms in our tanks as well.
We just don't realize it and in all my years reefing I have never heard anyone mentioning them.
Because of our small tanks and relative dim lights we don't see or recognize them for what they are.

A friend and myself simply can't get calcium levels to the SPS standard and they hover under 400 or lower if something happens to Ca production.

I have noticed that I have more debris in suspension than most tanks and decided to have a better look.
I got my camera and looked at the debris on the rocks. Most of it was calcareous and some had organic shapes like sticks and broken shells.
The magnification didn't allow for coccolithophores or coccoliths since they are even to small for a proper look in a light microscope.
After my last water change the water column had a haze to it for a few days and I think that is possibly Coccolithophores and other calcareous algae.

They have a very short live span and use up a lot of calcium. Their armor falls of and slowly falls to the ocean floor, meanwhile they reflect light so well their blooms can be seen from space.
I can imagine they produce an organic mass that is like a dead fish in the tank at all times. Is this what fuels dinoflagellates?

I was looking at photos of red tide blooms in the ocean and noticed they often come with white ones.
The official time is white ones peak in the spring and red ones in late summer.

I think it's very likely these ocean blooms are linked, but proving how is not easy. It's documented that a virus kills off the white blooms.

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We have found out that dinos usually like water changes. - That could be because of increase in coccolithopores.
There are at least two local Ostreopsis tanks that can't reach proper calcium levels.
When I siphon from the sand the amounts of dust baffles me. - That could be the excess calcium I'm adding and not seeing on the corals that have stunted growth.
We have yet to find out what causes dino blooms and keeps them going in reef tanks.

Here is a new dimension worth having in mind.

Emiliania Huxley
emiliania_huxleyi_3.jpg


Notice the various colors in the ocean and the country sized blooms.
watl.jpg



I noticed red and white tides often go together.
red+tide.jpg


Guess what this white stuff is? From 2 microns to many miles (km) in thickness.
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I think I need to get out of reefing but I don't know how, I definitely do not want to spread this horrible affliction around so selling the rock and animals seems out of the question, anybody have any ideas?
 
I think I need to get out of reefing but I don't know how, I definitely do not want to spread this horrible affliction around so selling the rock and animals seems out of the question, anybody have any ideas?


Well equipment and rock you can bleach and kill the livestock and sell that off as dead rock. As far as livestock I wouldn't know what to do either.
 
Well equipment and rock you can bleach and kill the livestock and sell that off as dead rock. As far as livestock I wouldn't know what to do either.
I am wondering if I quarantine the fish and treat them with copper if they would be safe to sell?
 
I've read from a couple places that pH affects Dino. Opening a window in a newer house cold increase oxygen and pH levels. I. Newer home they tend to be more airtight thus more co2
I was running a co2 scrubber on my skimmer for years, pH was always 8.3+ and I have an older home that is not super air tight and my furnace and hot water are direct vented.
 
Great info, DNA

I still have some ostreopsis visible only the microscope. I am fostering further biodiversity and getting a lot of micro critters by dosing big amounts of phytoplankton and aminoacids (copepods, snails, amphipods, tube-worms...). I dose 100 ml phytoplankton per day (nanochloropsis, Isochrysis and tetraselmis) with a peristaltic pumps in a very linear way (a squirt every hour).

The first days I got a little spike of dino-snot but now it seems to have come to a balanced situation and ostreopsis is clearly vanishing even in full sun light and doing WC.

Never got better results and so easily. I bet it is a matter of time to fully get rid of this pest.
 
Hi DNA...

I am in my 8th day of H2O2 dosing (60ml per day: 180 gallon tank).
I have a haze in my tank; run a big skimmer; and change filter socks daily.
Calcium is at 450. No calcium reactor, or supplements.

Regarding coccolithopores... how can these be controlled and diminished?
 
If the tank is having a bacterial bloom, I'd consider adding a UV filter, although I'm not sure I'd buy one just yet. Borrowing one might be useful, though.
 
If the sterilizer is working properly, it likely will be able to kill the bloom fairly quickly, although the skimmer might need some time to clear up the water. If the bulb is too small or too old or the flow is too low, that could be an issue, though.
 
We don't have any of the bottled plankton here so I can't try that on my tank.
Is it something that works in any good permanent way?

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It's been a long time since I looked this good at my water column as I did last night.
I compared the mass from right after the lights had gone out to 4 hours later.

There was a steady increase and after 4 hours it was much more dense than I thought it would be. (~5x)
I saw loads of brown "dino" colored quite large 1/24" (1mm) clumps floating around.
A cloud or haze can be seen in the strong beam from the flashlight that seems to be a part of my reef tanks night life.

A lot is going on in the tanks microscopic world.
Most of it has to be living plankton looking for food.

I have a vast number of species in this size category already, but amphipods I only see rarely as dead skeletons.
I used to see them frequently in my pre-dino years of reefing.
 
I dosed ich attack for 5 days with my simmer and carbon off, it has slowed it down, now green algae is growing on the glass and cyano is starting to bloom which I think might be a good sign, I will try to put some under the microscope tonight.
 
A survey on dinoflagellates in reef tanks.

A survey on dinoflagellates in reef tanks.

A survey on dinoflagellates in reef tanks.

I wanted to do it years ago, but since we have not yet got to the essence of dinoflagellates I think it's the best step in moving forward with this mistery.
The aim is for us to easily be able to compare our tanks and parameters in order to pick out what we have in common and hopefully what it is that makes dinos tick.

It will be very extensive and next to everything about your tank will be included.
Finishing it should take less than 10 minutes.

Send me a private message here on RC.
Once I have 5 willing to take part it's on.
Everyone with a dinoflagellate problem can take part.

It will be categorized into the types of dinos you have.
Reefers with unidentified dinos can also participate. (Identification is very important, so do it first if you possibly can).

A spreadsheet format is what I have in mind.
I'd send it to you via email and once you have filled it in and sent it back you'll receive everyone else's contribution.

Updates will be emailed to everyone when new info gets added.

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