Aquabacs' Cadlights Artisan 50 Azooxanthellae Tank build

How small are you considering small BTW? Nannochloropsis is 1µl to 2µl. That's smaller then a human red blood cell averages @ ~7µl - 8µl.
 
OK after talking with one of our phycologists, there really aren't that many "phytoplanktons" under 1µl. There are picoplanktons and bacterplanktons that do possess chlorophyll but they are not considered phytoplanktons. There are some really small blue greens, I mean really small.
 
Here is Jens Kallmeyer's post from this thread:

The fundamental question about herbivory in soft corals is the size of the phyto and/or the species we are referring to. As Claude already said in his post, when aquarists talk about phytoplankton, they talk about those few species that are actually available in culture. Personally I don't know of any study that has shown that any azoo soft coral actually ingests species like Nannochloropsis, Duniella etc. All the stuff that we usually culture is huge, they form particles that are at least tens, some even hundreds of micron in size. However, most of the phytoplankton biomass in the Oceans is made up from species like Synechococcus and Prochlorococcus, which are few microns in size. The size difference is comparable between a steak and a whole cow.

Cheers

Jens

Both of the organisms Jens mentioned are actually cyanobacteria. I looked up Synechococcus and wikipedia says 0.8 to 1.5 microns. Prochlorococcus is 0.5 - 0.8 microns and considered the most abundant photosynthetic organism on earth. So you are right these are not phytoplankton. Would it even be safe to introduce this bacteria into our tanks?
 
Which is exactly the point I and our phycologist made. There is not many phyto's under 1µl. Believe it or not, Phyto-Feast has Synechococcus in it just for this very reason. I'll look into the other cyano mentioned.

He's also wrong IMO/IME. Maybe in Germany he can't get phyto products that are not clumped, but I can show you slide after slide of various phyto brands from the US that do not clump to "particles that are at least tens, some even hundreds of micron in size." I'm not talking about just our own products but competitors as well. While I have a TON of respect for Jens that statement is off base.
 
One issue with both Synechococcus and Prochlorococcus is they have a poor nutritional profile (lack HUFAs) for the most part. Most animals have shown they can not live on either of those alone (from what I have been told). Given they are the most prolific in the ocean it makes sense they'd be found in the gut, but what actually are they doing for the coral if they are not a good nutritional source?
 
Ha now I want to do gut analysis on my NPS corals :) Sounds like a job for when I travel less, like in the fall. I think I'll set-up a dedicated tank ASAP just for this.
 
Which is exactly the point I and our phycologist made. There is not many phyto's under 1µl. Believe it or not, Phyto-Feast has Synechococcus in it just for this very reason. I'll look into the other cyano mentioned.

He's also wrong IMO/IME. Maybe in Germany he can't get phyto products that are not clumped, but I can show you slide after slide of various phyto brands from the US that do not clump to "particles that are at least tens, some even hundreds of micron in size." I'm not talking about just our own products but competitors as well. While I have a TON of respect for Jens that statement is off base.

Do you know if Shellfish Diet clumps? :hmm5:
 
I'm more informed on the RN side so let me ask some one.

OK, answer is no, SD does not clump. If we find any of our products clumping they do not get sent out.
 
Do you know if Shellfish Diet clumps? :hmm5:

Mike, did you notice that on a new bottle of SD? I only saw that once and that was when I had a bottle of SD that was being used longer that it was intended to be used for :) the bottle of SD seems to last forever.

Gresham, could you share with us again how long after the "best used by date" could the product be used for when stored refrigerated properly?


Thanks


Mike
 
Yes old bottles will do this, and ones not cared for properly.

I can't shed a ton of light on SD, as like I said, I am a RN person and that is where most my knowledge base is formed around in this company regarding our product lines. SD is not a long lasting product, IIRC you get around 12 - 14 weeks. Hatcheries use it well prior to the "best before". That is why we invented Phyto-Feast in the first place, so reef aquarium users can be able to actually use the product up prior to it no longer being acceptable to use. SD does not have all the species PF has, like Synechococcus.

I'll ask in the AM, besides me, the only other people here are the ones harvesting the phyto or bottling RN products.

www.shellfishdiet.com

FWIW we're working on yet another Phyto product that should interest you :D
 
Yes old bottles will do this, and ones not cared for properly.

I can't shed a ton of light on SD, as like I said, I am a RN person and that is where most my knowledge base is formed around in this company regarding our product lines. SD is not a long lasting product, IIRC you get around 12 - 14 weeks. Hatcheries use it well prior to the "best before". That is why we invented Phyto-Feast in the first place, so reef aquarium users can be able to actually use the product up prior to it no longer being acceptable to use. SD does not have all the species PF has, like Synechococcus.

I'll ask in the AM, besides me, the only other people here are the ones harvesting the phyto or bottling RN products.

www.shellfishdiet.com

FWIW we're working on yet another Phyto product that should interest you :D

I will be waiting patiently :D
 
I only get clumping where the SD exits the output tube going into the aquarium, and I'm sure this is only because the saltwater gets to it at that point.
 
But does it stay clumped when it hits the main current?

If it stays clumped then the storage of the product in the peri tube itself is getting too warm (most likely). Have you tested the output to see how cold it is?
 
No it doesn't stay clumped, but I wouldn't be surprised if the SD is getting too warm while in transit in the tubing, especially with these summer temps. This is where a nice setup like Mike or Steve has would be most beneficial. I will have very minimal traveling distance from my cooler to the sump where SD will be dosed in my new setup though. Less than 1 ft.
 
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Finally starting to get a little polyp extension...just a little...but it is progress.

Mike
 
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Finally starting to get a little polyp extension...just a little...but it is progress.

Mike

Its looking good!!
 
There's a small colony of what looks like a branching dendro on DD, at least there was last night, and the price was reasonable. I would actually consider it but I'm putting all my money towards equipment right now.

Gresham I tried to measure the temp of my SD last night but my temp probe was too slow to be accurate, plus it had been sitting in warm tank water before hand. The SD was surprisingly cool to the touch though. I will do a better job using a hand held thermometer tonight for you.
 
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