Phytoplankton keeps dying off

[LiveFreeOrReef]

I've tried a couple of times to start up a phytoplankton culture using a jar of live phytoplankton from algae Barn on one attempt and dinkins on another attempt. Both times my phytoculture is crashed. I'm confused on what I'm doing wrong? I use the Coral ranch f2 fertilizer and I only use two MLs for the 2,000 ml container I'm using. I'm mixing the saltwater properly. I'm not using a heater and I'm using an air stone running very slowly. I also stir the contents everyday. I have attached pictures of what it looked like after I started the culture and what it looks like now.

 

[Fish Fan]

Hello!

Do you sanitize your vessel and other equipment?

Check out @EnterName's recent phyto culture guide for additonal help:
https://www.reef2reef.com/threads/another-phytoplankton-culture-tutorial.1165682/

Good luck!

 

[JTP424]

Couple of questions!!!
Are you using a single strain or mixed?
Do you have a light source for it?
*Edit, also do you keep the lid cockeyed like that?

 

[Mr. Mojo Rising]

Just asking cause its not mentioned in your post, but do you have a light on it?

 

[JTP424]

ahhh looks like there are little lights underneath... not sure if they're grow lights with the proper spectrum....
Based on thoughts...

If its from Algaebarn it's potentially oceanmagik, which is a blend, which the algaes will compete with each other, which IMO would just crash them all

If those aren't grow lights, the spectrum isn't proper for the algae to grow

If that's the air escape...(offset lid) you're probably getting contaminants killing off the algae

So potentially one to all three of those are my guess....

 

[slingfox]

You need a lot more light than what is shown in the picture.

 

[LiveFreeOrReef]

Hello!

Do you sanitize your vessel and other equipment?

Check out @EnterName's recent phyto culture guide for additonal help:
https://www.reef2reef.com/threads/another-phytoplankton-culture-tutorial.1165682/

Good luck!

Yes I did. A couple times with alcohol

 

[LiveFreeOrReef]

Mixed blend

 

[LiveFreeOrReef]

I can upgrade the light

 

[LiveFreeOrReef]

Where can I find nanochloropsis to culture with?

 

[LiveFreeOrReef]

Tilted lid is for air escape. Maybe I'll get a better vessel so I can vent properly

 

[Fish Fan]

Where can I find nanochloropsis to culture with?

I suggest R2R member and sponsor @Eldredge. You can reach out to him thorugh his thread here:
https://www.reef2reef.com/threads/l...opepods-rotifers-free-shipping-13-75.1085059/

Or order directly from his website here:
https://reefplantation.com/products/nannochloropsis-single-species

He has very good prices and service

 

[Mr. Mojo Rising]

Tilted lid is for air escape. Maybe I'll get a better vessel so I can vent properly

Try to find a plastic lid, drill one hole for the airline and drill a second smaller hole for air to escape.

For the light, just find a cheap 15 watt light, it doesn't need strong lighting, just needs proper spectrum.

 

[Kasrift]

Lots of things going on with this. As stated, better light/lid could help, but not necessarily the cause of the crash. Mixed phyto is a very likely cause, and it is best to get strains for culturing.

I typically get mine from Reef Legends since they sell phyto for cultures separately. Lastly, check the salinity of your cultures. Oftentimes you can culture a little lower salinity since it will creep up with evaporation. I almost never culture at 1.025.

There are quite a few guides on culturing, so I would start there. I wouldn't get discouraged, a few key things corrected and culturing your own phyto can be very rewarding.